This worksheet is designed to give practice in using the exact trigonometric ratios to find missing values. This worksheet does not require knowledge of the sine rule or cosine rule.

Section A begins by presenting the two special right-angle triangles and the table of ratios to be completed.

Section B then requires learners to use the exact values in some products and sums.

Section C then presents some right-angle triangles with missing angles.

Section D provides triangles with missing sides.

Lastly, section E provides some problems involving exact trig values related to other topics such as area, angles in polygons and coordinate geometry.