🔍 Free Preview — first 3 questions
Question 1
The angle of elevation of the top of a tower from a point 40 m away is 30°. The height of the tower is: (NDA PYQ)
A20/√3 m
B40/√3 m
C40√3 m
D20√3 m
Question 2
The angle of elevation of the top of a 30 m high tower from a point on the ground is 45°. The distance of the point from the base is: (NDA PYQ)
A15 m
B30 m
C30√2 m
D30√3 m
Question 3
A person standing on the bank of a river observes that the angle subtended by a tree on the opposite bank is 60°. When he moves 20 m back, the angle becomes 30°. The height of the tree is: (NDA PYQ)
A10√3 m
B20√3 m
C10 m
D20 m