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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