Question

7. A 3.0-m ladder leans against a wall and makes an angle with the wall of 28° as shown in the drawing. What is the height h above the ground where the ladder makes contact with the wall?

(a) 2.6 m
(b) 2.3 m
(c) 2.1 m
(d) 1.9 m ​

Answer 1

Answer:

h ≈ 1.5 m

We can use trigonometry to solve this problem. Let h be the height above the ground where the ladder makes contact with the wall. Then, we have:

sin(28°) = h/3.0

Solving for h, we get:

h = 3.0 sin(28°)

h ≈ 1.5 m

Therefore, the answer is not among the options given. However, our calculation shows that the height above the ground where the ladder makes contact with the wall is approximately 1.5 meters.

Am right since my answer is not part of the options

Answer 2

a) 2.64m

Step-by-step explanation:

The triangle is a right angled triangle. We have angle beta, and the hypotenuse. We are solving for side a

a=c×cos(beta)

a=3×cos(28⁰)

a=2.64m