Chapter 12.7, Problem 9P

To determine

To determinethe angle that new ramp makes with the ground.

Answer to Problem 9P

The angle that new ramp makes with the ground is ${8.1}^{\circ }$

Explanation of Solution

Given information :

  

Here we know that,

  $\begin{array}{l}\sin {25}^{\circ }=\frac{AC}{5}\\ AC=2.11\end{array}$

Further we know that,

  $\begin{array}{l}\sin B=\frac{2.11}{15}\\ B={\sin }^{-1}0.1407\\ B={8.10}^{\circ }\end{array}$