question_answer

The angle of depression of a car from the top of a 20 m high tower is\[\text{6}0{}^\circ \]. At what distance from the foot of the tower is the car?

A) 16m                      

B)        8m

C) 22m                      

D)        12m

Correct Answer: D

Solution :

Let AB be the tower and BC be the distance of the car from the tower. \[\Rightarrow \] \[140\times 605=11\times L.C.M.\] \[\Rightarrow \]               \[L.C.M.=\frac{140\times 605}{11}=7700\]