Reduction formulas for the tangent Animation Play

Reduction formulas for trigonometric functions Whiteboard exercise Play

Reduction formulas for trigonometric functions Student activity Play

Rewriting the sine using double-angle formulas for the tangent Animation Play

Sequences and formulas Animation Play

Substituting into formulas connected with a right-angled triangle Student activity Play

Substituting into formulas connected with any triangle Student activity Play

Substituting into formulas connected with numbers Student activity Play

Substituting into formulas connected with quadrangles Student activity Play

Substituting into formulas connected with quadrangles Whiteboard exercise Play

Substituting into formulas connected with triangles Whiteboard exercise Play

Substituting into the formulas Class activity Play

Substituting into the formulas Whiteboard presentation Play

The formulas of constant functions Whiteboard exercise Play

The sine – reducing angles Student activity Play

Trigonometric formulas Whiteboard exercise Play

Using formulas Animation Play

Using the double-angle formulas for the tangent to rewrite cosine Whiteboard exercise Play

Using the double-angle formulas for the tangent to rewrite sine and cosine Student activity Play

Using the reduction formulas Whiteboard exercise Play

Using the reduction formulas Student activity Play

Using well known formulas Animation Play