The points on a straight line Animation Play

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

The reasons for using circles Animation Play

The same values of the tangent function Whiteboard exercise Play

The scalar product (1) Class activity Play

The scalar product (2) Whiteboard presentation Play

The scalar product of parallel and perpendicular vectors Whiteboard exercise Play

The scalar product of parallel and perpendicular vectors Student activity Play

The second tangent theorem Animation Play

The second tangent theorem – equality in length Student activity Play

The second tangent theorem – equality in length Whiteboard exercise Play

The shape of the graph of the tangent function 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 standard and the general form of the equation of a straight line Animation Play

The tangent Whiteboard presentation Play

The tangent Class activity Play

The tangent Student activity Play

The tangent Whiteboard exercise Play

The tangent Whiteboard exercise Play

The tangent Student activity Play

The tangent and coordinates of the points Animation Play

The tangent and cotangent functions revisited Student activity Play

The tangent and the cotangent are inversely proportional Student activity Play