Asked by Kathryn
this is a propf and I need both sides to equal each other. Thanks this one stumped me.
sin^3x/(1-cosx) = sinxcosx+sinx
sin^3x/(1-cosx) = sinxcosx+sinx
Answers
Answered by
Reiny
RS = sinx(cosx + 1)
LS = sin^2x(sinx)/(1-cosx)
= ((1-cos^2x)sinx/(1-cos)
= (1-cosx)(1+cosx)sinx/(1-cosx)
= (1+cosx)sinx
= RS
LS = sin^2x(sinx)/(1-cosx)
= ((1-cos^2x)sinx/(1-cos)
= (1-cosx)(1+cosx)sinx/(1-cosx)
= (1+cosx)sinx
= RS
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