Math, asked by zack28113, 1 year ago

how to solve 2sin54sin66

Answers

Answered by akarsh777

5

It is of the form of 2sinasinb
then formula 2sinasinb= cos (a-b)-cos (a+b)
2sin54sin66 can be written as 2sin66sin54
= cos 12 - cos 120..

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