## Precalculus (6th Edition) Blitzer

$209.9$ feet
We can use the tangent of the triangle to solve for the angle. Since, $\tan \theta= \dfrac{Opposite}{Adjacent}$ $\tan 63^{\circ}= \dfrac{h_1}{330}$ and $\tan 53^{\circ}= \dfrac{h_1}{330}$ Simplify after subtracting the difference: $h_1=330 \tan 63^{\circ}-330 \tan 53^{\circ} =209.9$ feet