The cosine rule Class activity Play

The cosine rule Whiteboard exercise Play

The cosine rule Student activity Play

The cosine rule leading to two solutions Animation Play

The cosine rule – special case Animation Play

The cosine – reducing angles Student activity Play

The cosine – reducing angles Whiteboard exercise Play

The cotangent and the cosecant Student activity Play

The derivative of the cosine function Student activity Play

The derivative of the cosine function Animation Play

The domain of the trigonometric functions Animation Play

The graph of the cosine function Student activity Play

The graph of the cosine Whiteboard exercise Play

The graph of the cosine Student activity Play

The graph of the cosine function Whiteboard exercise Play

The graph of the derivative of the cosine function Animation Play

The harbour entrance Animation Play

The integral of the cosine function Whiteboard exercise Play

The integral of the cosine function Student activity Play

The law of cosines Animation Play

The period of the sine and the cosine Whiteboard exercise Play

The period of the trigonometric functions Animation Play

The periods of the sine and the cosine Student activity Play

The Pythagorean identity Whiteboard exercise Play

The Pythagorean identity Whiteboard exercise Play