AS Pure Chapter 10: Trigonometric Identities and Equations

2 flashcards · Mathematics · by TheoTyson

1. What is the trigonometric identity involving sin⁡\sinsin and cos⁡\coscos ?

   sin⁡2θ+cos⁡2θ=1\sin ^2 \theta + \cos ^2 \theta = 1sin2θ+cos2θ=1

2. What is the trigonometric identity involving sin⁡,cos⁡\sin , \cossin,cos and tan⁡\tantan ?

   tan⁡θ=sin⁡θcos⁡θ\tan \theta = \frac{\sin \theta}{\cos \theta}tanθ=cosθsinθ​