The graph of the cosine Student activity Play

The graph of the cosine Whiteboard exercise Play

The graph of the sine function Student activity Play

The graph of the tangent Student activity Play

The identities of the trigonometric functions Animation Play

The perimeters of the triangles – trigonometric ratios for selected angles Whiteboard exercise Play

The perimeters of the triangles – trigonometric ratios for selected angles Whiteboard exercise Play

The period of the trigonometric functions Animation Play

The Pythagorean identity Whiteboard exercise Play

The Pythagorean identity Whiteboard exercise Play

The Pythagorean identity revisited Student activity Play

The same values of the tangent function Whiteboard exercise Play

The same values of trigonometric functions Whiteboard exercise Play

The shape of the graph of the tangent function Whiteboard exercise Play

The sides of the triangles – trigonometric ratios for selected angles Whiteboard exercise Play

The signs of the trigonometric functions Student activity Play

The signs of trigonometric functions Whiteboard exercise Play

The signs of trigonometric functions – clockwise turn Whiteboard exercise Play

The sine – reducing angles Student activity Play

The sine – reducing angles Whiteboard exercise Play

The sum and difference of trigonometric functions Whiteboard exercise Play

The tangent and cotangent functions revisited Student activity Play

The tangent and the cotangent are inversely proportional Student activity Play

The tangent and the secant Student activity Play

The tangent and the secant Animation Play