Math, asked by Roshankr111, 1 year ago

Solve:- Cos20°Cos 40°Cos 60°Cos80°

Answers

Answered by nitthesh7

0

=cos20°cos40°cos60°cos80°
=cos20°cos40°sin20°sin10°
(as cosФ = sin(90°-Ф))

:) Hope this Helps!!!

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