The graph of the tangent Student activity Play

The graph of the tangent function Animation Play

The graph of the tangent function Student activity Play

The graph of the tangent function Whiteboard exercise Play

The graph of the tangent function Student activity Play

The graphs of the tangent and cotangent Animation Play

The height of a tree Animation Play

The identities of the trigonometric functions Animation Play

The integral of the tangent function Animation Play

The line and the circle Whiteboard exercise Play

The line and the circle Student activity Play

The normal and the tangent to a circle Whiteboard exercise Play

The normal and the tangent to a circle Animation Play

The normal and the tangent to a circle Student activity Play

The normal to a curve Student activity Play

The normal to the circle Animation Play

The parabola Animation Play

The parabola Student activity Play

The perimeter of the triangle and the diameter of the big circle Animation Play

The period of the tangent Whiteboard exercise Play

The period of the tangent Student activity Play

The period of the trigonometric functions Animation Play

The perpendicular bisector Whiteboard exercise Play

The point of tangency Whiteboard exercise Play

The points on a straight line Animation Play