Mathematics Education Proving Trig Identities practice question 1 By Magic Monk on Tuesday, October 23, 2018 In this tutorial we give you a practice question on proving trig identities. The question is: Prove that (cot^2(x)-1)/(cot^2(x)+1) = 1-2sin^2(x). Have a go then come and see the answer! 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