Question

prove that
$\frac{\cos( \alpha ) - \sin( \alpha ) + 1 }{\cos( \alpha ) + \sin( \alpha ) - 1 } = \csc( \alpha ) + \cot( \alpha )$

Answer 1

(cos@-sin@+1+cos@+sin@-1)/ cos@-sin@+1-cos@-sin@+1. =(2cos@+2)/(-2sin@+2)
cos@+1/1-sin@
cosec@ + cot@