Math, asked by sparshdubey2001, 1 year ago

prove that: cos24°+cos55°+cos125°+cos204°+cos300°=1/2

Answers

Answered by Anonymous

7

L.H.S= cos24°+cos55°+cos(180°-55°)+cos(180°+24°)+cos300°
cos24°+cos55°-cos55°-cos24°+cos(360°-60°)
cos60°
1/2= R.H.S

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