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Vijay posted an Question
January 21, 2021 • 11:43 am 30 points
  • IIT JAM
  • Mathematics (MA)

Please send the solution to the problem given in the attachment.

please send the solution to the problem given in the attachment.

1 Answer(s) Answer Now
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  • Amanpreet kaur

    cos(π-x)= cos π cosx + sinπ sinx. { cosπ=-1, sinπ=0}==> -cos x

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    Satpal singh

    see this complete link https://math.stackexchange.com/questions/1218310/proving-that-cos-pi-phi-cos-phi-geometrically

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