Date: Mar 30, 2013 8:41 AM
Author: Peter Scales
Subject: Re: ACT Math Question

> the answer should be 12/5 
> cos x = addjacent side/ hypotenuse
> you need you use pythagorean thereom to find the
> third side which 12 ( b^2 + 5^2 = 13^2).
> Then tan x = opposite side/ adjacent side


To get the correct answer it is necessary to use all of the information given.

The angle lies in the range 270 to 360 degrees.

In that range tan is negative.

Regards, Peter Scales.