d_m1771
Mar 26, 2007, 10:49 AM
:confused: 1-cot x
______
tan x - 1
galactus
Mar 26, 2007, 01:36 PM
What are you supposed to do? Simplify?
Rewrite as:
\frac{1-\frac{cos(x)}{sin(x)}}{\frac{sin(x)}{cos(x)}-1}
This equals:
\frac{\frac{sin(x)-cos(x)}{sin(x)}}{\frac{sin(x)-cos(x)}{cos(x)}}
=\frac{\sout{sin(x)-cos(x)}}{sin(x)}\cdot\frac{cos(x)}{\sout{sin(x)-cos(x)}}
=\frac{cos(x)}{sin(x)}=cot(x)