2 Complete the proof of the sine sum identity in the space below sin cos 90 B Letting B A B Q C sin A B cos 90 A B b d 06 8

Question

2 Complete the proof of the sine sum identity in the space below sin cos 90 B Letting B A B Q C sin A B cos 90 A B b d 06 8 proved previously along with cos sin 90 cos 90 A B cos 90 A cos B sin 90 A sin B

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