Question

15. A straight highway leads to the foot of a tower. A man standing at the top of the tower
observes a car at an angle of depression of 30°, which is approaching the foot of the
tower with a uniform speed. Six seconds later, the angle of depression of the car is found
to be 60°. Find the time taken by the car to reach the foot of the tower from this point​

Answer 1

Step-by-step explanation:

you should use trigonometry to solve this. but I have a simpler version. pls check if the answer is right

for the angle to become 60⁰ from 30⁰, it took 6 secs.

for the angle to become 90⁰ from 60⁰, it will take 6 secs because the difference in angle is same. if angle is 90⁰, then it means that the car has reached the foot of the tower.

pls check if it is right. I may give you the exact answer afterwards.