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Cotx-1/ cotx+1 = 1-tanx/1+tanx
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May 27, 2018
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Cotx-1/ cotx+1 = 1-tanx/1+tanx
Mathematics
high-school
Iam ByeBlogs
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sinxcosx−1sinxcosx+1=1−cosxsinx1+cosxsinx
sinx−cosxcosxsinx+cosxcosx=sinx−cosxsinxsinx+cosxsinx
sinx−cosxcosx⋅cosxsinx+cosx=sinx−cosxsinx⋅sinxsinx+cosx
sinx−cosxsinx+cosx=sinx−cosxsinx+cosx
hence, proved
Grendian
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Jun 2, 2018
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