Question: a. Show that (sin A + cos A) 2 1 + sin 2A. b. Hence find the exact value of (sin 8 7 8

a. Show that (sin A + cos A)2 ≡ 1 + sin 2A.

b. Hence find the exact value of(sin 8 7 8 + cos-

(sin 8 7 8 + cos-

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