A person observes the angle of elevation of a building as 30°. The person proceeds towards the building with a speed of 25(√ 3 -1)m/hour. After 2 hours, he observes the angle of elevation as 45°. The height of the building (in m) is

A person observes the angle of elevation of a building as 30°. The pe

1.	A person observes the angle of elevation of a building as 30°. The person proceeds towards the building with a speed of 25(√ 3 -1)m/hour. After 2 hours, he observes the angle of elevation as 45°. The height of the building (in m) is
A.	50 ( √ 3 +1)
B.	50
C.	100
D.	50 ( √ 3 -1)
Answer» C. 100