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Technology 
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Sine Function in a Right Trian...

sin, cos and tan (Trigonometry) 
Flash 
Tool 

[0]

Flashbased demonstration of the procedure for finding the sine of an acute angle of a right triangle, given the lengths of the opposite side and hypotenuse. College Cram charges access fees by t...
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Sine and ArcSine in a Right Tr...

Finding Angles (Trigonometry) 
Flash 
Tool 

[0]

Flashbased introduction to finding the third value when any two, of the opposite side, hypotenuse, and angle, are known. College Cram charges access fees by the month or by the semester for most ...
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Sine curve visualization tool:...

Trig Functions (Trigonometry) 
Flash 
Tool 

[1]

As students drag the ball along the perimeter of the circle a line is drawn between the point on the circle and the corresponding point on the sine curve. The range is from 0 to 360 degrees on the cir...
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Spherical Coordinates Presente...

Spherical (Trigonometry) 
Flash 
Tool 

[0]

This simple applet illustrates spherical coordinates in an interactive way. The user can manipulate a point in 3D and see its spherical coordinates changing. The applet contains many multiple choice p...
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Surfin' Sinefeld's Insidious S...

Graphs of Functions (Trigonometry) 
Flash 
Tool 

[0]

Gives a multiplechoice quiz on the properties of the sine function, particularly on how the amplitude, frequency, phase, and offset affect the graph.
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Tangent Function in a Right Tr...

sin, cos and tan (Trigonometry) 
Flash 
Tool 

[0]

Flashbased demonstration of the procedure for finding the tangent of an acute angle of a right triangle, given the lengths of the opposite and adjacent sides. College Cram charges access fees by...
More: lessons, discussions, ratings, reviews,...

Tangent and ArcTangent in a Ri...

Finding Angles (Trigonometry) 
Flash 
Tool 

[0]

Flashbased introduction to finding the third value when any two, of the opposite side, adjacent side, and angle, are known. College Cram charges access fees by the month or by the semester for mo...
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The Imaginary Number i

Complex Numbers (Trigonometry) 
Flash 
Tool 

[0]

Flash tutorial introducing i: definition, square roots of negative integers, raising i to powers, and complex numbers. College Cram charges access fees by the month or by the semester for most res...
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Trig Review: Special Triangles

306090 and 454590 (Trigonometry) 
Flash 
Tool 

[5]

Allows user to assign lengths to sides of 306090 and 454590 triangles, and checks the answers.
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Algebraic Vector Addition

Vector Addition (Trigonometry) 
Java Applet 
Tool 

[0]

Students can see how two or more vectors are added algebraically and geometrically. Students specify the vectors and the applet shows the resulting vector.
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Angle: An Illustrated Classifi...

Working with Angles (Trigonometry)+ 
Java Applet 
Tool 

[0]

An interactive Java applet that displays the degree measure of userdefined angles along with the labels according to the common classification: acute, right, etc. An option is to show negative as wel...
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Complex Numbers

Complex Numbers (Trigonometry)+ 
Java Applet 
Tool 

[1]

This tool lets students see how complex numbers are added, subtracted, and multiplied graphically. They are asked to describe what has happened when complex numbers are added, subtracted, and mulitpl...
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Complex Numbers Applet

Complex Numbers (Trigonometry) 
Java Applet 
Tool 

[0]

This applet does symbolic calculation of complex numbers. This means that you can enter integers and fractions for the component values of a complex number (real and imaginary). Values with numbers th...
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Components of a Vector

Component Form & Length (Trigonometry) 
Java Applet 
Tool 

[0]

Users develop an understanding that vectors are composed of both magnitude and direction.
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Cosine Box

sin, cos and tan (Trigonometry)+ 
Java Applet 
Tool 

[1]

Applet that provides a visualization of the cosine function. Also can be used as a cosine calculator (degrees). Includes short activity in solving cos(x) = k equations.
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Cosine Engine

The Unit Circle (Trigonometry) 
Java Applet 
Tool 

[0]

With this applet, students study the extrema of the function A cos^2 (t) + B cos(t) + C. A parabola is drawn with studentsupplied coefficients and constant, and the unit circle is drawn below, so th...
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Crane Ship

sin, cos and tan (Trigonometry)+ 
Java Applet 
Tool 

[1]

Applet teaches an intuitive feel for the geometric length of sin(t) given the length of the hypotenuse and t. A crane is stationed on a ship. Its wire has the length of sin(t), where t is the angle ...
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Data Flyer

General (Trigonometry)+ 
Java Applet 
Tool 

[2]

This activity allows the user to plot a set of (x,y) ordered pairs and graph a function on the same coordinate plane. The applet allows the manipulation of a function of the form y = f(x).
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Dot Product

Dot Product (Trigonometry) 
Java Applet 
Tool 

[0]

Students can specify two vectors and see how they are multiplied using the dot product method, graphically.
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Double Ferris Wheel

Graphs of Functions (Trigonometry)+ 
Java Applet 
Tool 

[1]

This is a Java Sketchpad animation of a double ferris wheel; the path of one passenger is traced as the ride spins.
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Dynamic Geometry Exploration: ...

Vectors (Trigonometry) 
Java Applet 
Tool 

[0]

This sketch has an airplane with an engine velocity that can be changed by clicking on a button and then moving a point. It also has a button for wind velocity. After you adjust the engine and wind ...
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Exploring Graph of Sine

Graphs of Functions (Trigonometry)+ 
Java Applet 
Tool 

[2]

Change the values of the parameters in y = a*sin(bx + c) + d and see how the changes effect the shape of the graph.
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Ferris Wheel

The Unit Circle (Trigonometry) 
Java Applet 
Tool 

[2]

This aplet is an introduction to trigonometric functions. A small red gondola moving around a ferris wheel can be viewed from different angles.
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Formula for sin(A+B)

The Unit Circle (Trigonometry)+ 
Java Applet 
Tool 

[0]

This applet teaches students geometrically that sin(A+B) = sin(A)cos(B) + cos(A)sin(B). Students can change the values of A and B.
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Fourier Series

Fourier (Trigonometry) 
Java Applet 
Tool 

[0]

Enter the first twentyone coefficients for a Fourier series and try to get an understanding of how each frequency affects the sum and the shape of the graph.
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