cosA/(1-tanA) + sinA/(1-cotA) = sinA + cosA
I have tryed turning tan and cot into sin and cos and everything but I can not prove it... can some one help??
I'm very impressed! It hass been a long time since the precalculus forum has seen any consistently correct algebraic manipulations from a student in just 1 post!cos/(1-sin/cos)+ sin/(1-cos/sin)
cos^2/(cos-sin) + sin^2/(sin-cos)
(cos^2 - Sin^2)/(cos-sin)