Math, asked by soccer5kid, 10 months ago

Find an acute angle α such that cos 55° + cos 65° = cos α.

Answers

Answered by ksonakshi70

0

Answer:

$2 \cos(55 + 65 \div 2) \cos(55 - 65 \div 2 ) \\ 2 \cos(60) \cos(10) \\ \cos(10) \\ hence \: \alpha = 10$

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