Question 184218
verify the identity 
(1-sinx)-------(cosx)
_______ = ______ 
(sinxcotx)-----(1+sinx)
.........................
(1-sinx)/cosx =? cosx/(1+sinx)  sin*cot = cos
Cross multiply
1-sin^2(x) = cos^(x)  We know that's true, right?