41. Education.ti.com - Home Compact, easy to use, reliable computer algebra software. It intelligently applies the rules of algebra, trigonometry, calculus and matrix algebra to solve a wide range of mathematical problems. This nonnumeric approach goes far beyond the capabilities of dedicated statistics packages and equation solvers that use only approximate numerical techniques. http://www.ti.com/calc/docs/derive.htm

language arts, world languages Advanced Search TI-83 Plus ... Sign In New Customer? Start here! Apply now for Educators' Keyboard Grant Take advantage now of 2 special offers when you buy the TI-83 Plus Silver Edition! more... Get where you need to go fast -get started- Activities Computer Software Discussion Groups Guidebooks/Manuals Handheld Software (Apps) K-16 Programs News Professional Development Success Stories Supplemental Books Support Tutorials Where to Buy Workshop Loan Homework help, tutorials, free downloads, games, and more! New ideas, activities, and programs to engage, inspire and motivate your students. T Find the resources you need to help your child succeed. * Handheld technology leadership measured in U.S.A. by Decision Analyst, Inc. Trademarks Link Policy

42. The Math Forum Trig/Calc Problem Of The Week This is the trigonometry and Calculus weekly interactive math project. AMath Forum Project. trigonometry and Calculus Problem of the Week. http://mathforum.org/calcpow/

A Math Forum Project Trigonometry and Calculus Problem of the Week Student Center Teachers' Place All Problems of the Week Search Calcpows ... Problem of the Week Library Sorry, no puzzles are currently available Math Forum Home Math Library Quick Reference Math Forum Search ... calcpow@mathforum.org

43. Welcome To Mathreference.net -- For All Your Math Needs References, charts, graphs, and tables in basic arithmetic, algebra, geometry, trigonometry, calculus, statistics and linear algebra. http://www.MathReference.net/

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44. Math Forum - Ask Dr. Math Archives: High School Trigonometry Browse High School trigonometry. Basics of trigonometry 12/12/2001Why is trigonometry important? How is it used in the real world? http://mathforum.org/library/drmath/sets/high_trigonometry.html

Ask Dr. Math High School Archive Dr. Math Home Elementary Middle School High School ... Dr. Math FAQ TOPICS This page: trigonometry Search Dr. Math See also the Dr. Math FAQ trigonometry formulas See also the Internet Library trigonometry HIGH SCHOOL About Math Analysis Algebra basic algebra ... Trigonometry Browse High School Trigonometry Stars indicate particularly interesting answers or good places to begin browsing. Averaging Two Angles How do you take the average of two or more angles? Basics of Trigonometry Why is trigonometry important? How is it used in the real world? Calculating Height in the Air I need to know the formula for calculating the height of an object, like how high in the air an object is. Carrying a Ladder around a Corner A ladder of length L is carried horizontally around a corner from a hall 3 feet wide into a hall 4 feet wide. What is the length of the ladder? Changing a Trigonometric Graph How do you graph: -cos 2x / 2? Curious Property of a Regular Heptagon How can I prove that in a regular heptagon ABCDEFG, (1/AB)=(1/AC)+(1/ AD)? Deriving Sines of 30, 45, 60 and 90 Degrees

45. Great Solutions Inc Presents The Machinist's Friend A Valuable Utility Program T Offers a Windows based utility program for making trigonometry calculations required in CAD/CAM and machining operations. Can be ordered online. http://www.machinistsfriend.com

Home Page Main Menu Right Triangle Oblique Triangle ... Industry News Since September 10, 1996 Order Line Office hours: Monday - Friday 9:00 AM to 8:00 PM Pacific time. Great Solutions, Inc. Version 2.0 for Windows The Machinist's Friend is a valuable utility program for Machine Shop Owners, Machinists, CNC Programmers, Metalworkers, Students, Engineers, or anyone else who needs to solve Trigonometry calculations. Also, a great utility tool for cad or cad-cam users. The Machinist's Friend runs on Windows 3.1 / 95 / 98 / NT / ME / 2000 / XP / XP Pro To find out more about what The Machinist's Friend can do, go to Main Menu Quotes from some of our valued customers "The Machinist's Friend is GREAT! I have bought a lot of software over the years, but I think buying The Machinist's Friend has to be one of my better investments. I'm going to school to learn CNC programming. At my next class, I'm going to tell the teacher about The Machinist's Friend and ask him to give your web address to the class. I think every machinist and machine shop should have The Machinist's Friend . If you ever get it into a calculator, let me know, I'll buy it also!

46. Trigonometry Review trigonometry Review. Definitions of Trigonometric Functions. You need a Javaenabledbrowser to take this quiz. Values of Functions in the First Quadrant. http://www.batesville.k12.in.us/Physics/CalcNet/Trig_Review/Trig_Review.html

Trigonometry Review Definitions of Trigonometric Functions You need a Java-enabled browser to take this quiz. Values of Functions in the First Quadrant You need a Java-enabled browser to take this quiz. Trigonometric Identities You need a Java-enabled browser to take this quiz. last update August 25, 1998 by JL Stanbrough

47. Expression Calculator Performs over a hundred simple, and complex calculations, with the ability to make several calculations simultaneously. Functions range from simple trigonometry, to Gaussian integrals, through 2D plots. Win95/98/Me/NT/2000 http://excalc.vestris.com/

Expression Calculator will dazzle you with its simplicity and power of over 100 mathematical expressions, its multithread capabilities and its complete documentation with historical references, algorithms and more. Expression Calculator version 2.43 for Windows 2000, NT, 95/98 Introducing the Expression Calculator The history of the calculator, references and more. Download the Expression Calculator Shareware and registered versions. Users Guide and Reference Adobe PDF format (zipped) Complete reference of all functions with historical notes, definitions and items of interest. Register the Expression Calculator Paying for a License By registering, you will be able to download the full version of the Expression Calculator with 3D plots, financial functions and more. Screenshots from the Calculator What's New User Comments - Post Yours! Subscribe to the Announcements List ... Bug Reports and Suggestions FREE! 15 days trial Quick Download back to Vestris Inc. site e-Mail Webmaster Vestris Inc Last modified: Tue Jun 05 08:59:51 Pacific Daylight Time 2001

48. Trigonometry And Music trigonometry and Music. Sounds are produced by things that vibrate.Pure tones, like the the sounds produced by tuning forks, are http://www.csm.astate.edu/music.html

Trigonometry and Music Sounds are produced by things that vibrate. Pure tones, like the the sounds produced by tuning forks, are described by sine waves y = A sin(2 pi f t), where t is time, f is how many times the thing is vibrating per second (f is for frequency , and A is how loud the sound is (A is for amplitude). If something is vibrating 256 times a second, you hear middle c. Sound of middle c (.wav file) Here is the graph. You can see that there are about, well, 25.6 waves during one tenth of a second. If we show you one second in the same amount of space, it just looks like a blob. If we double the frequency of any tone, we go up exactly one octave. So 512 vibrations per second is c above middle c. C above middle c (.wav file) Here is the graph. We get more complex sounds by adding waves of different frequencies and loudnesses together. A violin string or an oboe cavity will vibrate with more than one frequency at once, usually at multiples of a fundamental frequency. Here is a wave with components at 512 Hertz, 1024 Hz, 1536 Hz and 2048 Hz (1 Hz = 1 vibration per second). Sound of this wave The higher components are called harmonics of the fundamental tone. If the fundamental is c at 512 Hertz, then the second harmonic is twice the frequency, c an octave higher at 1024 Hertz, the third harmonic is g at 1536 Hertz, and the fourth harmonic is c at 2048 Hertz. A musical tone consists of the fundamental and many harmonics added together.

49. RPN Engineering Calculator And Consulting By J. A. Associates RPN Calculator with 5 unique keypads Standard, Engineering, Magnetics, trigonometry, and Convert. Also offering Magnetic consulting. http://www.j-a-associates.com

The offers more than 200 solutions with five unique keypads: Standard, Engineering, Magnetics, Trigonometry, and Convert, still only $39. Using RPN calculators makes complex calculations quite easy. With all the additional functions of the makes this one indispensable. Download it now for a thirty day free trial Our Web Site in a nutshell! Rpn Calculator The RPN Engineering Calculator Virtual Drive Creator DOS SUBST Function RPN Calculator - Lite One or Two Keypad Version Try These Links Interesting WEB Sites The Old Geezer Cool Fifties Photo! Consulting What's New? Recent RPN Changes. Shareware Sites ASP Member Pages Version 5.3.0 of the RPN Engineering Calculator has been released, click here to see what's new! Version 2 of the Professional Version has been released, check it out (It's only $12.50)! The free version is still there with lot's of enhancements! Consulting available Magnetics Specialist! Transformer, Inductor, and Filter Design. For any questions, comments, or suggestions, contact us at: support@j-a-associates.com

50. Trigonometry - Maths Online Gallery trigonometry The applets are started by clicking the red buttons. Theapplet Triangle and Law of Sines emphasizes that the mathematical http://www.univie.ac.at/future.media/moe/galerie/trig/trig.html

Trigonometry The applets are started by clicking the red buttons. The applet Triangle and Law of Sines emphasizes that the mathematical symbols denoting lengths, angles and trigonometric functions in a triangle stand for concrete numbers. Furthermore, it illustrates (two versions of) the Law of Sines. Note that the applet does not provide a proof of the latter. For a multimedia proof see The Law of Sines by Math Education and Technology. The applet is started from the red button in its own window. Also see the learning units under Trigonometric functions Definition of the trig functions (applet) and under Functions 2 The graphs of sin, cos and tan (applet) Graphs of elementary trigonometric functions (graphics) Recognize functions 3 (puzzle, sine and cosine functions) Recognize graphs 3 (puzzle, sine and cosine functions) Gallery - Table of contents Maths links online tools topics ... Welcome Page

51. Math Forum - Ask Dr. Math Archives: Middle School Pi Dr Math answers over 60 questions submitted by people about Pi including questions relating to the bible's relationship to it and it's relationship to trigonometry. http://mathforum.org/dr.math/tocs/pi.middle.html

Ask Dr. Math Middle School Archive Dr. Math Home Elementary Middle School High School ... Dr. Math FAQ TOPICS This page: pi Search Dr. Math See also the Dr. Math FAQ Pi = 3.14159... Internet Library pi T2T FAQ pi day MIDDLE SCHOOL About Math Algebra equations factoring expressions ... Word Problems Browse Middle School Pi Stars indicate particularly interesting answers or good places to begin browsing. Accuracy in Measurement Since pi is irrational, either the circumference or the diameter of a circle must be irrational. How is that possible? Calculating Pi - Brent-Salamin Algorithm Can you show me a simple method to calculate pi accurately to an arbitrary number of digits? Facts about Pi What are some interesting facts about pi? Finding Pi: Buffon's Needle Method I was hoping to find a surprising way of finding pi using a needle and parallel lines... Formula for Pi I would like to know the formula for Pi that was used to calculate out to the bazillionth digit for the memory contests. Pi and the Area of Circles If pi truly goes on and on forever without repeating, is it impossible to find the exact area of a circle?

52. TCAEP.co.uk: Maths: Trigonometry Sponsored by the Institute of Physics Numbers Algebra trigonometry Calculus MatricesLimits Complex Numbers SI Units Symbols Printer Version, Maths trigonometry http://www.tcaep.co.uk/maths/trig/

Sponsored by the Institute of Physics Numbers Algebra Trigonometry ... Symbols Printer Version Maths Trigonometry Right-Angled Triangle Trigonometrical Identities Sine Law Cosine Law ... Tangent Law Click on an equation to see a larger version Right-Angled Triangle Right-angled triangle where a is the shortest side adjacent to angle b is the side opposite and c is the longest side (the hypotenuse) Trigonometrical Identities Sine Law Triangle where side a is opposite angle A , side b is opposite angle B and side c is opposite angle C Cosine Law Triangle where side a is opposite angle A , side b is opposite angle B and side c is opposite angle C Tangent Law Triangle where side a is opposite angle A , side b is opposite angle B and side c is opposite angle C H O M E S C I E N C E M A T H S A S T R O N O M Y ... About Page compiled: Wed Sep 05 18:37:57 GMT+01:00 2001

53. Mathematics Problem Writing Service For School, Math Leagues High quality mathematics problems for middle school and high school math competitions. Topics range from algebra and geometry to probability and trigonometry. Pricing is available upon request. http://www.virtu-software.com/math/default.asp

Math Competition Problem Writer Quality Mathematics Problems For High School and Middle School Competitions One of the great ways to inspire students to learn more about mathematics is to hold competitions in which students compete against students from their own school, or from around the state, or country. Problem solving skills are sharpened, while teamwork is encouraged. The end result is that students think more critically, understand concepts better, and learn to work well together. Douglas Twitchell, who maintains Virtu Software's Problem Of the Week page, experienced this first hand throughout his elementary, secondary, and college career. Twitchell is a former competitor and award winner in a variety of state and national math competitions. He has won awards and recognition in leagues such as MAML, NEML, ASMA, NEAML, and in college he ranked in the top 150 in the prestigious William Lowell Putnam exam. In recent years, he has been hired by various mathematics leagues, such as the Maine Association of Math Leagues, the Maine Algebra and Geometry League, and others, to write creative and challenging math problems for middle school and high school mathematics competitions. Whether it's a regional, state, or school competition, consider hiring Doug to write problems for your math meet. The problems are carefully crafted and written, with diagrams where appropriate, all cleanly formatted for printing. Each problem is proofed to guarrantee both accuracy and clarity. Proofing is done by a high school math teacher and math team coach, and the proofing cost is included.

54. AP Calculus At BHS Readiness for calculus review quizzes covering functions, graphing, trigonometry, and precalculus. http://www.batesville.k12.in.us/physics/calcnet/

AP Calculus at BHS What's Here? "Swirl 2" by Steve McDonough Preparing for AP Calculus Letter to Prospective AP Calculus Students Review for Calculus Functions The Function Institute - What is a function, anyway? Graphs of Important Functions Review Trigonometry Trigonometry Review Trigonometric Realms Exercises in Math Readiness - from the University of Saskatchewan Pre-Calculus Review - written by AP Calculus teacher James R. Rahn Online Readiness Tests for Calculus Student Self Test - a 20-question multiple-choice test from Brigham Young University Department of Mathematics ( Test Index Ready for Calculus? - an extensive free-response test with answers from the University of New Brunswick, Canada Math Placement Tests - placement tests in Basic Algebra, Intermediate Algebra, and Elementary Functions from Humboldt State University, CA Stony Brook Math Placement Exam - from the State University of New York at Stony Brook - NOTE: Precalculus students should be able to answer the questions in sections I and II.

55. Trigonometry trigonometry The very fast review. I. Basics. trigonometry is nothingmore than how to deal with angles versus straight lines. http://www.hyper-ad.com/tutoring/trig.htm

Basics Identities Examples Formulae · Exercizes · Advanced Keywords Navigation Recommended Books Site Index ... Gift Shop Trigonometry: The very fast review I. Basics Example The 45° triangle Figure 1- The 45° triangle According to Pythagorus, . Using the definitions of the trig functions gives us back to top Example 2. The 30°/60° triangle Figure 2 - The 30°/60° triangle According to Pythagorus, . Using the definitions of the trig functions gives back to top Example 3. The 15°/75° triangle Figure 3 - The 15°/75° triangle Now we make use of the formulas Addition , Subtraction There are other triangles, but I am lazy. Let's see how far you can get with just those I've done so far and a few simple laws (so you can add and subtract and multiply and divide angles). Please note that getting 1/3 of an angle is equivalent to trisecting it, a classic impossible problem! ( Advanced - because the answer depends on solving a cubic. The answer is rather dirty-looking, anyway). back to top And there are as many more as you care to memorize (always a mistake!). The hard part will be in coming up with smaller divisions (such as 5 degrees) without the arithmetic getting infinitely hairy. The author tried for hours and gave up! back to top II. Trig

56. 4 Trigonometry Review Next 4.1 Radians Up Ch.1 Review of Needed Previous 3.8 Compositionof Functions. 4 trigonometry Review. 4.1 Radians; 4.2 Conversion; http://www.npac.syr.edu/REU/reu94/williams/ch1/section3_4.html

Next: 4.1 Radians Up: Ch.1 Review of Needed Previous: 3.8 Composition of Functions 4 Trigonometry Review 4.1 Radians 4.2 Conversion 4.3 Trigonometric Functions 4.4 Sign (+ or -) of the Trig Functions ... 4.9.5 Half Angle mx_williams@smcvax.smcvt.edu

57. Arc Distance Formula By James Q. Jacobs Finding the shortest distance between two points on the earth given latitude and longitude. Download ARC_CALC_3, Microsoft Excel version, A Spherical Triangle Calculator by James Q. Jacobs. http://www.jqjacobs.net/astro/arc_form.html

Spherical Trigonometry Arc Distance Formula Finding the shortest distance between two points on the earth given latitude and longitude. Spherical Triangle Calculator Download ARC_CALC_3 . This small program will do the calculations below in an Excel 4.0 spreadsheet. You only need to input the coordinates. The program supports input of three sites and calculates the three arc distances, the area of the spherical triangle and the bearings between sites. Most spreadsheet programs should be able to import this file format. The graphic below illustrates the spreadsheet, before corrections on July 24, 2002. Previous downloads have "A to C" and "B to C" labels swapped for arcs and bearings. Let me know if there are other bugs in the applet. Epoch_2000 Temporal Epoch Calculator is a similar Excel spreadsheet. It calculates the temporal changes in astronomic constants, obliquity of the ecliptic and illumination angles at any specified latitude. You just enter the latitude and the date. Sherical Trigonometry Arc Distance Formulas Note: a and b are distinct from a (alpha) and b (beta).

58. Multimedia Activities | Trigonometry Shockwave™ plugin required to view multimedia activities. trigonometry.Shifting and scaling sine and cosine curves Experiment http://www.exploremath.com/activities/activity_list.cfm?categoryID=6

59. TheMathPage:  Skill In Arithmetic  Topics In Trigonometry Arithmetic and trigonometry courses taught at Borough of Manhattan Community College, The City University of New York. http://www.themathpage.com/

A complete course in arithmetic: Add, subtract, multiply, divide. Mental arithmetic Powers of 10 Regrouping Decimals Parts of natural numbers Fractions Percent Trigonometry from the very beginning: Ratio and proportion Definitions of the trigonometric functions Solve right triangles The 30-60-90 triangle The law of sines The law of cosines The unit circle Radian measure Arc length The formal rules of algebra Rational and irrational numbers Functions and graphs Logarithms The binomial theorem Mathematical induction

60. Trigonometry And Astronomy http://www.geocities.com/Hollywood/Academy/8245/

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