Math, asked by shashank5857, 11 months ago

(cos a-b) - (cos a+b)

Answers

Answered by adrija70

2

Answer:

2sina.sinb

Step-by-step explanation:

cos(a-b) - cos (a+b)

= cosa.cosb + sina.sinb - cosa.cosb

+sina.sinb

= 2sina.sinb

Hope it helps.

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