A closer look at the sine Whiteboard exercise Play

A closer look at the sine, the cosine and the tangent Whiteboard exercise Play

A closer look at the trigonometric ratios Student activity Play

A simple identity Student activity Play

Altering the  y-scale and the  x-scale Student activity Play

Ambiguous case of the sine rule Animation Play

Amplitude of the trigonometric functions Whiteboard exercise Play

An application of the sine and cosine rules Whiteboard exercise Play

An application of the sine and cosine rules Student activity Play

An implicit function involving the sine Animation Play

An implicit function involving the sine and the exponential function Animation Play

Application of the sine rule Animation Play

Applying the formula for the area of a triangle Student activity Play

Applying the formula for the area of a triangle Whiteboard exercise Play

Applying the sum and difference identities for the sine Whiteboard exercise Play

Applying the sum and difference identities for the sine and cosine Whiteboard exercise Play

Applying the sum and difference identities for the sine and cosine Student activity Play

Applying the sum identity for the sine Whiteboard exercise Play

Are all trigonometric functions really necessary? Student activity Play

Area between the graph of the sine and cosine function and the x-axis Whiteboard exercise Play

Areas of figures Whiteboard exercise Play

Areas of figures Student activity Play

Basic periods of trigonometric functions Student activity Play

Basic trigonometric equations involving the sine and the cosine functions Student activity Play

Basic trigonometric equations involving the sine function Animation Play