A closer look at the sine Whiteboard exercise Play

A closer look at the trigonometric ratios Simulation Play

A closer look at the trigonometric ratios Student activity Play

A cone Student activity Play

A cone Whiteboard exercise Play

A linear function in the argument Student activity Play

A linear function in the argument Whiteboard exercise Play

A staircase Student activity Play

A tide Student activity Play

A tide Whiteboard exercise Play

A vibrating beam Whiteboard exercise Play

A vibrating beam Student activity Play

A water wheel Student activity Play

Absolute value and graphs of trigonometric functions Whiteboard exercise Play

Absolute value and graphs of trigonometric functions Student activity Play

Amplitude of the trigonometric functions Whiteboard exercise Play

Applying double-angle formulas to prove a trigonometric identity 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 Student activity Play

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

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

Applying the sum and difference identities for the tangent Student activity Play

Applying trigonometric identities to equations Student activity Play

Applying trigonometric identities to equations Whiteboard exercise Play

Are all trigonometric functions really necessary? Student activity Play