## anonymous 3 years ago Trig Identity

1. anonymous

$\huge \frac{ 1 }{ \frac{ 1 }{ cosx }+\frac{ sinx }{ cosx } }= \frac{ 1 }{ cosx }-\frac{ sinx }{ cosx }$

2. anonymous

simplify both left and right sides into 1 fraction... that's 1 way you can prove the left side is the same as the right side.

3. anonymous

to get rid of the fraction over fraction, would this method be correct ? $\huge \frac{ 1 }{ \frac{ 1 }{ cosx }+\frac{ sinx }{ cosx } }$

4. anonymous

$\huge =\frac{ \cos^2x }{ \cos^2x }$