Applications Of Derivatives Question 23
Question: A ladder is resting with the wall at an angle of $ 30^{o} $ . A man is ascending the ladder at the rate of 3 ft/sec. His rate of approaching the wall is
Options:
A) 3 ft/sec
B) $ \frac{3}{2} $ ft/sec
C) $ \frac{3}{4} $ ft/sec
D) $ \frac{3}{\sqrt{2}} $ ft/sec
Show Answer
Answer:
Correct Answer: B
Solution:
His rate of approaching the wall $ =3\times \cos 60{}^\circ =\frac{3}{2}ft/sec $ .
BETA
