You found the long side and multiplied by 2, but the two sides are not equal. You need to use cosine to find x and sine to find y:

$\displaystyle{{\cos{{25}}}}^{\circ}=\frac{{x}}{{150}}\usepackage{cmbright}\Huge\$ and $\displaystyle{{\sin{{25}}}}^{\circ}=\frac{{y}}{{150}}\usepackage{cmbright}\Huge\$

Solve for x and y, add the results and use a calculator to get a numerical value.