You can put this solution on YOUR website! 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?