ranaraja
Jun 28, 2010, 02:49 PM
Prove that cosecA - cotA = √1 - cosA/1 + cosA
Kitkat22
Jun 28, 2010, 03:37 PM
Is this homework? We do not do homework!
ebaines
Jun 30, 2010, 07:30 AM
I think what yuou mean is this:
cosec A - cotan A = \sqrt{ \frac {1 - \cos A} {1 + \cos A} }
Is that right? As always with this type of problem, convert the cosecant and cotan functions to there primitives using sine and cosine. Then it's simply a mater of manipulation, and substituting in \sin A = sqrt {1 - \cos^2 A}