Recalling trigonometric facts Whiteboard exercise Play

Reciprocals of basic trigonometric ratios Student activity Play

Reduction formulas Animation Play

Reduction formulas due to periodicity Whiteboard exercise Play

Reduction formulas due to periodicity Student activity Play

Reduction formulas for trigonometric functions Student activity Play

Reduction formulas for trigonometric functions Whiteboard exercise Play

Relative atomic mass Class activity Play

Representation of the data Animation Play

Representation of the data Student activity Play

Resultant force Animation Play

Results of 9 tests Whiteboard exercise Play

Rewriting the trigonometric expressions Animation Play

Rewriting trigonometric expressions as rcos(A – α) Whiteboard exercise Play

Rewriting trigonometric expressions as rcos(A – α) Student activity Play

Rewriting trigonometric expressions as rsin(A + α) Whiteboard exercise Play

Rewriting trigonometric expressions as rsin(A + α) Student activity Play

Roll a die Student activity Play

Roll a die Simulation Play

s-block elements Animation Play

s-Block elements Class activity Play

s-Block elements Whiteboard presentation Play

Seating people by the round table Animation Play

Secrets of functions Animation Play

Sign of values of trigonometric functions Whiteboard exercise Play