Mathematics

Trigonometric Functions

a sin x + b cos x (applet using unit circle)
A visual demonstration of deriving an expression for a sin x + b cos x. (Java)
Determination of limits
An interactive investigation of the limit of a function for various values of two parameters. (Java)
Models of the sine function (graphs & applications)
A demonstration of modelling applications of the sine curve with notes, an animation, three worked examples and links to exercises.
Sine box (applet using unit circle)
Interactive applet demonstrating the unit circle idea of sine.
Sine curve (applet using unit circle)
An animation demonstrating the graphing of the sine curve.
Trig function modelling exercises (challenging)
A demonstration of modelling applications of the sine curve with notes, an animation, three worked examples and links to exercises.
Trig functions & identities (graphics)
A synopsis with examples of the six trigonometric functions.
Trig identities (overview)
A synopsis of trigonometric formula.