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Vijay Singh chauhan Asked a Question
January 21, 2021 11:43 ampts 30 pts
please send the solution to the problem given in the attachment.
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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 Best Answer
    see these attachments and make notes from these
    • cropped7640653214099058296.jpg
    • cropped5454718332934274317.jpg
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  • Satpal singh
    see these attachments and make notes from these
    • cropped2791076256479218093.jpg
    • cropped7596105503986841313.jpg
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  • Satpal singh
    see this pdf
    • 21jan2.pdf
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  • Satpal singh
    your proof is given here
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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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  • Vijay Singh chauhan
    .
    • cropped562358136541533204.jpg
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  • Satpal singh
    see this video https://youtu.be/2lsewNfZ1Wo
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  • Anonymous User
    pdf
    • Adobe Scan Jan 21, 2021 (6).pdf
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  • Anonymous User
    any Doubt u can ask
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