# Thread: Please help me with my trigo assignment.

1. ## Please help me with my trigo assignment.

HI Everyone,

Please help me to find X in this problem. I attach a file for the drawing. Thanks in Advance.. It is about Similar triangle.

2. The great triangle and the little triangle are isosceles. So we have the following system:

$\displaystyle\left\{\begin{array}{ll}x-2y=x-5\\2x-3y=15\end{array}\right.$

From the first equation we get $y=\frac{5}{2}$

Plug y in the second and find x.