Chapter 10 - Systems of Equations and Inequalities - Section 10.6 Systems of Nonlinear Equations - 10.6 Assess Your Understanding - Page 797: 105

$15.8^\circ$

1. Based on the given conditions, we can find the vertical drop as $h=5300-4100=1200\ ft$. 2. With the length $L=4420\ ft$, we have $sin\theta=\frac{1200}{4420}=\frac{60}{221}$ $\theta=sin^{-1}(\frac{60}{221})\approx15.8^\circ$