Question

Prove the following:
cos O sin (90° - 0) + sin cos (90° - 0) = 1
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Answer 1

Answer:

cos O sin (90° - 0) + sin cos (90° - 0) = 1

Cos O sin (90 * 1 - O) + sin O cos (90 * 1 - O) = 1

Cos O cos O + sin O sin O = 1

Cos^2 O + sin^2 O = 1

1 = 1

Hence proved.

Step-by-step explanation:

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