Mutual position of two circles Whiteboard exercise Play

Mutual position of two circles Class activity Play

Mutual position of two circles and the distance between their centres Whiteboard exercise Play

Mutual position of two circles in the coordinate system Simulation Play

Mutual position of two circles in the coordinate system Student activity Play

Number of intersection points of two circles Whiteboard exercise Play

Parabola and a tangent line Simulation Play

Parallel and perpendicular lines Animation Play

Period of the tangent function Animation Play

Periods of the tangent function Whiteboard exercise Play

Points with no tangent Student activity Play

Points with no tangent Whiteboard exercise Play

Possible positions of two circles Animation Play

Primitive period of the tangent Student activity Play

Primitive period of the tangent Whiteboard exercise Play

Properties of trigonometric functions of a general angle (1) Whiteboard presentation Play

Properties of trigonometric functions of a general angle (1) Class activity Play

Properties of trigonometric functions of a general angle (2) Class activity Play

Properties of trigonometric functions of a general angle (2) Whiteboard presentation Play

Proving identity for the tangent Whiteboard exercise Play

Quadrilaterals with incircle Animation Play

Radii of three circles Whiteboard exercise Play

Radius of inscribed and circumscribed circles Animation Play

Range of trigonometric functions Student activity Play

Range of trigonometric functions Whiteboard exercise Play