Math, asked by bhargav3481, 1 year ago

prove that cos7x=64cos^7x-112cos^5x+56cos^3x-7cosx

Answers

Answered by abhishek2851

0

no dont know sorry.....

..........

Answered by shodagaralimondal

0

cos7x=64cos^7x-112cos^5x+56cos^3x-7cosx

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