Multiple Choice
A petrol car is parked
feet from a long warehouse (see figure) . The revolving light on top of the car turns at a rate of
revolution per second. The rate at which the light beam moves along the wall is
. Find the rate
when
is
. 
A) 
B) 
C) 
D) 
E) 
Correct Answer:

Verified
Correct Answer:
Verified
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