Chapter 11.1, Problem 44STP

To determine

To Find: To find the degree measure.

Answer to Problem 44STP

The answer is F

Explanation of Solution

Given information: Given height is 20 inches and length is 12 feet

Formula used: Trigonometric Functions

Calculation:

Since the height is 20inches and length is 12 feet which is 144 inches of the given triangle.

Now,

  $\begin{array}{l}\mathrm{Sin}x=\frac{20}{144}\\ \mathrm{Sin}x=0.1388\\ x={\mathrm{Sin}}^{-1}(0.1388)\\ x=7.978\end{array}$

Which is nearest to 8 degree

Hence option F is correct