Applying trigonometric identities to equations Whiteboard exercise Play

Are all trigonometric functions really necessary? Student activity Play

Basic periods of trigonometric functions Student activity Play

Basic trigonometric equation Animation Play

Basic trigonometric equation Whiteboard exercise Play

Basic trigonometric equations Animation Play

Basic trigonometric equations involving the sine and the cosine functions Student activity Play

Basic trigonometric equations involving the sine function Animation Play

Basic trigonometric functions Whiteboard presentation Play

Basic trigonometric functions Class activity Play

Basic trigonometric identities Student activity Play

Basic trigonometric identities Whiteboard exercise Play

Body mass index Animation Play

Body mass index – activity Whiteboard exercise Play

Butterflies Student activity Play

Changing the sign of an angle Student activity Play

Changing the sign of an angle in expressions Whiteboard exercise Play

Combined quadratic inequalities Student activity Play

Combined quadratic inequalities Whiteboard exercise Play

Common part of the half planes Whiteboard exercise Play

Coordinates of midpoints of line segments Whiteboard presentation Play

Coordinates of midpoints of line segments Class activity Play

Defining half-planes Whiteboard exercise Play

Defining half-planes – a simple case Student activity Play

Defining inequalities in a coordinate system Student activity Play