Math, asked by pinnellipiduguralla1, 10 months ago

① expansion of cos (A-B-C)​

Answers

Answered by mahapatrobandita
1

Answer:

Answer: Cos(a-b-c)= =Cos a Cos b Cos c +Sin a Sin b Cos c + Sin a Cos b Sin c - Cos a Sin b Sin c.

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