I'm sorry, but what's the question?? I don't understand what we have to do??
The length of the wall is approximately 16.7ft high.
To solve this problem, we would use trigonometric ratios.
The sine angle between any two body is the ratio between the opposite and hypotenuse.
Data given;
- angle = 68 degree
- hypotenuse = 18 foot
- opposite = ?
<h3>Trigonometric Ratio</h3>

From the above calculation, the length of the wall is approximately 16.7ft
Learn more on trigonometric ratio here;
brainly.com/question/4326804
Answer:
11) 2
12) 1
13) 6
14) 6
15) m<1=58°
m<2=122°
m<3=58°
m<5=122°
m<6=58°
m<7=122°
m<8=58°
Step-by-step explanation:
11) 2
12) 1
13) 6
14) 6
15) m<1=58°
m<2=122°
m<3=58°
m<5=122°
m<6=58°
m<7=122°
m<8=58°
You can do 12/72 = 9/x. You cross multiply and it becomes 12x = 648. Divide 648 by 12, and x equals 54.