Math, asked by sayak3, 1 year ago

please solve cos^2 20 + cos^2 70 with working

Answers

Answered by saindulakavath

2

cos^2 20+cos^2 70
=sin^270+cos^2 70...since cos^2
20=sin^2 70
=1.....since sin^2x + cos^2x=1

sayak3: thank you

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