Math, asked by wwwchjothi123, 5 months ago

what is the value of cos2
36° -sin2 39°

Answers

Answered by nishikaingle2006

1

Answer:

find the value of sin180 and cos360 . 7.5 K LIKES ... play-micro. Prove that cos(A+B )cos(A-B)=cos2A-sin2B=cos2B-sin2A.

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