mirilopez0314
mirilopez0314
27-03-2017
Mathematics
contestada
Cotx-1/ cotx+1 = 1-tanx/1+tanx
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ummeammara1999
ummeammara1999
27-03-2017
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
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