Mishra observes the top of a tower of height \(25\sqrt 3 \;m\) from a point on the ground at an angle α. After walking 50 m towards the tower along the line joining the foot of the tower and the first point of observation. He observes that the angle of elevation of the top of the tower is 2α. Find α.

Mishra observes the top of a tower of height \(25\sqrt 3 \;m\) from a

1.	Mishra observes the top of a tower of height \(25\sqrt 3 \;m\) from a point on the ground at an angle α. After walking 50 m towards the tower along the line joining the foot of the tower and the first point of observation. He observes that the angle of elevation of the top of the tower is 2α. Find α.
A.	60°
B.	90°
C.	45°
D.	30°
Answer» E.