Mathematics Education Trigonometry lesson 12 – exact values By Magic Monk on Tuesday, October 16, 2018 In this lesson you learn how to express trigonometric ratios as exact values. For example, instead of typing cos30 in the calculator to get 0.866, after doing this tutorial you will be able to write cos30 = sqrt(3)/2 without using the calculator. education mathematics steemiteducation steempress steemstem Previous Post Next Post Related Posts Mathematics Education Vector applications question – Elastic collision, momentum, and kinetic energy Mathematics Education Vectors lesson 21 – Basic vector operations in Geogebra Mathematics Education Vectors lesson 20 – drawing vectors in Geogebra