(tanx+sinx)(1-cosx)=sin^2xtanx

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asked Jun 27, 2018 18.4k views

1 Answer

KFP · Answer 1 · 2018-07-01T09:48:20+0000

[(sinx/cosx)+sinx](1-cosx)
[(sinx+sinx.cosx/cosx)](1-cosx)
[ sinx(1-cosx)+sinxcosx(1-cosx)]/cosx
sinx-sinxcosx+sinxcosx-sinx cos^2 x/cosx

sinx-sinx cos^2 x/cosx
sinx(1-cos^2 x)/cosx
(1-cos^2x)sinx/cosx
sin(squared)x.tanx.......R.H.S

(tanx+sinx)(1-cosx)=sin^2xtanx

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