Copy of Sin Cos and Tan animated from the unit circle

Author:Rita Visser, Tim Elton

See how the functions sin, cos, and tan are defined from the unit circle, extending the definitions beyond the the 0 to 90 degrees that fit nicely inside a right-angled triangle.

New Resources

Trefoil Knot
רישום חופשי
Graph of y = a(x − h)² + k
Angles of Intersecting Lines
Drunk Parabola

Discover Resources

Colorado
Shearing Investigation
Sketch first derivative
NC - Ficha 34 - Gustavo Sant'Anna
Cópia de Matrix and Linear Transformation (HTML5 version)

Discover Topics

Probability
Power Functions
Random Experiments
Rotation
Logarithmic Functions