Answer
$209.9$ feet
Work Step by Step
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
