Question

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Answer 1

Answer:

answer is

1 + sin 0 = 1- sin 0 upon cos 0

Answer 2

Answer:

on cross multiply

cos^2 theta=(1-sin theta) (1+sin theta)

(a+b) (a-b) =a^2-b^2

cos^2 theta=1-sin^2 theta

cos^2 theta+sin^2 theta=1