Identities for trigonometric functions Class activity Play

Identities for trigonometric functions Whiteboard presentation Play

Inscribed circles Whiteboard exercise Play

Intersection points of two circles Whiteboard exercise Play

Intersection points of two circles Student activity Play

Inverse function of the tangent Student activity Play

Inverse trigonometric functions Class activity Play

Inverse trigonometric functions Whiteboard presentation Play

Justification of the tangent function identity Animation Play

Line that is tangent to both circles Animation Play

Locus Student activity Play

Looking for the formula for a trigonometric function Student activity Play

Looking for the formula for a trigonometric function Simulation Play

Miscellaneous problems Student activity Play

More about the rate of change Student activity Play

More constructions Student activity Play

More on tangents Student activity Play

Mutual position and number of common points of two circles Student activity Play

Mutual position and number of common points of two circles Whiteboard exercise Play

Mutual position of a circle and a line Student activity Play

Mutual position of a circle and a line Whiteboard exercise Play

Mutual position of a line and a circle Whiteboard presentation Play

Mutual position of a line and a circle Class activity Play

Mutual position of two circles Student activity Play

Mutual position of two circles Whiteboard presentation Play