# How do you prove cosx(tanx+secx)=sinx?

Dec 24, 2015

I don't believe they are equal

#### Explanation:

This is what I got:

$\sin x + 1 = \sin x$

Here's the work:

$\cos x \left(\tan x + \sec x\right) = \sin x$

$\cos x \tan x + \cos x \sec x = \sin x$

$\cos x \sin \frac{x}{\cos} x + \cos x \frac{1}{\cos} x = \sin x$

$\sin x + 1 = \sin x$

Could be missing something though...