A body is projected at velocity of 40 m/s, after 2 sec it crosses a vertical pole of height 20.4 m. What is angle of projection and horizontal range?
Two ships are sailing in the sea on the two sides of a lighthouse. The angle of elevation of the top of the lighthouse is observed from the ships are 60° and 30° respectively. If the lighthouse is 144 m high, what is the distance between the two ships?
From a point A on a level ground, the angle of elevation of the top tower is 30º. If the tower is 100 m high, the distance of point A from the foot of the tower is:
A man 180 cm tall stands 4.5 meter in front of a large vertical plane mirror then what is the angle subtended at the eye by his image in the plane mirror?
A boy 1.4 m tall casts a shadow 1.2 m long at the time when building casts a shadow 5.4 m long. What is the height of the building.
