Question: a Prove the identity $$ (1-sin x)(sec X+tan x) equiv cos x, quad x eq frac{(2 n+1) pi}{2}, n in mathbb{Z} . $$ b Find

$a Prove the identity $$ (1-\sin x)(\sec X+\tan x) \equiv \cos$

a Prove the identity $$ (1-\sin x)(\sec X+\tan x) \equiv \cos x, \quad x eq \frac{(2 n+1) \pi}{2}, n \in \mathbb{Z} . $$ b Find the values of $y$ in the interval $0 \leq y \leq \pi$ for which $$ 2 \sec ^{2} 2 y+\tan ^{2} 2 y=3 $$ giving your answers in terms of $\pi$. CS. JG.014

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