Question

what is the value of cosπ

Answer 1

Answer :

Now,

cos π

= cos ( π + 0 )

= - cos 0, since cos ( π + θ ) = - cos θ

= - 1, since cos 0 = 1

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Answer 2

Solution:-

given by :-

$\cos(\pi ) \\ \cos(180) \\ by \: cordinte \: system \\ \cos(90 + 90) \\ - \sin(90) \\ - 1ans$