The tangent can be determined with a collection of mathematical formulas but is most commonly determined by dividing the sine function by the cosine function.

Working with the graphs of trigonometric functions Trigonometric graphs Trigonometric graphs can be sketched when you know the amplitude, period, phase and maximum and minimum turning points.

Graphs of Sine and Cosine 1.2 An applet illustrating how the graphs of sine and cosine are related to the unit circle. Transformations of Functions 1.3 An applet illustrating how transformations ...

National 5 Working with trigonometric relationships in degrees Trigonometric relationships Trigonometric functions can have several solutions. Sine, cosine and tangent all have different positive ...

However, it's still hard to get an intuitive sense of the relationship between the circle and the trigonometric functions and the triangles. That all changes with animated GIFs.