Math, asked by srilakshmi08, 9 months ago

cos^2(pi/10)+cos^2(2pi/5)+cos^2(3pi/5)+cos^2(9pi/10)=2

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Answered by mathdude500

11

Answer:

Please find the attachment

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Answered by sowjanya1195

8

Answer:

hope it hlps u frnds

all the bst frnds

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