Question 5 (Multiple Choice Worth 4 points)

A 32-foot ladder is leaning against a building and forms a 29.37° angle with the ground. How far away from the building is the base of the ladder? Round your answer to the nearest hundredth.

A. 15.69 feet
B. 18.01 feet
C. 27.89 feet
D. 36.72 feet

Question 6 (Fill-In-The-Blank Worth 4 points)



Answer :

Certainly! Let's solve the problem step-by-step:

### Given Data
- Length of the ladder ([tex]\(L\)[/tex]) = 32 feet
- Angle formed with the ground ([tex]\(\theta\)[/tex]) = 29.37 degrees

### Objective
To find the distance from the base of the building to the base of the ladder, which we'll call [tex]\(d\)[/tex].

### Step-by-Step Solution
1. Convert the angle from degrees to radians:
Since many trigonometric functions use angles in radians, we first convert the given angle to radians.
[tex]\[ \theta_{\text{radians}} \approx 0.5126 \text{ radians} \][/tex]

2. Use the Cosine of the Angle:
The cosine function relates the adjacent side (base of the ladder, [tex]\(d\)[/tex]) to the hypotenuse (the ladder length, [tex]\(L\)[/tex]):
[tex]\[ \cos(\theta) = \frac{\text{adjacent}}{\text{hypotenuse}} \][/tex]
[tex]\[ \cos(29.37^\circ) = \frac{d}{32} \][/tex]

3. Calculate the Adjacent Side:
To isolate [tex]\(d\)[/tex], multiply both sides of the equation by the hypotenuse (32 feet):
[tex]\[ d = 32 \times \cos(29.37^\circ) \][/tex]
[tex]\[ d \approx 32 \times 0.871 \approx 27.89 \text{ feet} \][/tex]

4. Round to the Nearest Hundredth:
The calculated value already appears as [tex]\(27.89\)[/tex], which remains the same after rounding.

### Conclusion
The distance from the base of the ladder to the building, rounded to the nearest hundredth, is:
[tex]\[ \boxed{27.89} \text{ feet} \][/tex]

So, the correct answer to the multiple-choice question is 27.89 feet.