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tester [92]
3 years ago
12

A ladder leaning against a wall makes an angle of 55 pour-cent with the ground. If the foot of the ladder is 6.5 feet from the w

all ,what is the length of the ladder to the nearest hundredth?

Mathematics
1 answer:
Vitek1552 [10]3 years ago
4 0

Answer:

11.33 feet

Step-by-step explanation:

The triangle for the given scenario is drawn below.

From the triangle ΔABC, AB is the length of the ladder, B is the foot of the ladder, AC is the wall, BC is the distance of the foot from the wall, and angle B is the angle of elevation of the ladder with ground.

Let the length of the ladder, AB = x

As per question, BC = 6.5 ft, \angle B=55°

Using cosine ratio of the angle B, we get

\cos 55=\frac{BC}{AB}\\\\\cos 55=\frac{6.5}{x}\\\\x=\frac{6.5}{\cos 55}=11.33\textrm{ ft}

Therefore, the length of the ladder is 11.33 ft.

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