Fig. 9.13SA straight highway leads to the foot of a tower. A man stand

1.	Fig. 9.13SA straight highway leads to the foot of a tower. A man standing at the top of the towerobserves a car at an angle of depression of 30°, which is approaching the foot of thetower with a uniform speed. Six seconds later, the angle of depression of the car is foundto be 60. Find the time taken by the car to reach the foot of the tower from this point.l6. The angles of elevation of the top of a tower from twg noito9 m from the base of tho t
Answer» thxss could you explain me again only last step

Fig. 9.13SA straight highway leads to the foot of a tower. A man standing at the top of the towerobserves a car at an angle of depression of 30°, which is approaching the foot of thetower with a uniform speed. Six seconds later, the angle of depression of the car is foundto be 60. Find the time taken by the car to reach the foot of the tower from this point.l6. The angles of elevation of the top of a tower from twg noito9 m from the base of tho t

Answer»

thxss

could you explain me again only last step