Math, asked by meryemekebbab4, 9 days ago

cos²35+cos²55+cos²10+cos²80

Answers

Answered by gummadavellibhaskarr

0

Answer:

cos35=cos(90-55)=sin55

cos10=cos(90-80)=sin80

sin²55+cos²55+sin²80+cos²80

(sin²α+cos²α=1)

1+1=2

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