Math, asked by csrbharadwaj, 1 year ago

cos10x+cos8x+3cos4x+3cos2x =

Answers

Answered by mukulg756

1

cos10x+cos8x+3cos4x+3cos2x =

cos18x + 3(cos4x+cos2x)

cos18x + cos18x

cos36x

hope it helps you

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