36. Elevated water storage tanks are built to store and supply water to nearby colonies. In the diagram given above, AB is an elevated water tank and CD is a nearby multistorey building. The building is 54 metres away from the water tank.

32. A kite is flying at a height of 60 m above the ground level. Ravi, standing at the roof of the house is holding the string straight

34 (a) The angle of elevation of the top of a building from a point A, on the ground, is 30 deg On moving a distance of 24 m towards its base to the point B, the angle

34(b) A tower stands vertically on the ground. A man standing at the top of the tower observes his friend at an angle of depression of 30 deg who is approaching the foot of the tower with a uniform speed.

36. Tejas is standing at the top of a building and observes a car at an angle of depression of 30° as it approaches the base of the building at a uniform speed. 6 seconds later, the angle of depression increases to 60°, and at that moment, the car is 25 m away from the building.

38. Radio towers are used for transmitting a range of communication services. including radio and television.

An electric pole is 10 m high. A steel wire tied to top of the pole is affixed at a point on the ground

A man on the top of a lighthouse observes the angle of depression of two ships on the opposite sides

From an aeroplane vertically above a straight horizontal road, the angles of depression

From the top of a light house, the angles of depression of two ships on the opposite sides of it are observed to be a and ẞ. If the height of the light house be h metres a

An observer 1.5 m tall is 28.5 m away from a tower and the angle of elevation of the top of the tower from the eye of the observer is 45 degrees.

An observer 1.5 m tall is 28.5 m away from a 30 m high tower. Determine the angle of elevation

A boy whose eye level is 1.35 m from the ground, spots a balloon moving with the wind

From a point on the ground, the angles of elevation of the bottom and the top of a

A vertical tower stands on a horizontal plane and is surmounted by a flagstaff of

Two poles of equal heights are standing opposite each other on either side of the road,

From the top of a 45 m high light house, the angles of depression of two ships

A pole 6m high is fixed on the top of a tower. The angle of elevation of the top of the pole

A straight highway leads to the foot of a tower. A man standing

From a point on the ground, the angles of elevation of the bottom

The angle of elevation of the top of a building from the foot of the tower is 30°

From a point on a bridge across a river, the angles of depression of the banks

Two pillars are standing on either side of a 80 m wide road. Height of one pillar is 20 m more than the

The angle of elevation of the top of a vertical tower from a point P on the ground is 60°.

One observer estimates the angle of elevation to the basket of a hot air balloon to be 60°, while

From the top of a 7m high building, the angle of elevation of the top of a cable tower is 60 and the angle of depression of its foot is 30.

A straight highway leads to the foot of a tower. A man standing on the top of the 75 m high tower observes two cars at

From the top of a tower 100 m high, a man observes two cars on the opposite sides of the tower

The angle of elevation of the top of a tower 30 m high from the foot of another tower in the same plane is 600 and the angle of elevation

From a point on the ground, the angle of elevation of the bottom and top of a transmission tower fixed at the top of 30m high building are 30° and 60° respectively.

As observed from the top of a 75 m high lighthouse from the sea-level, the angles of depression of two ships are 30° and 60°. If one ship is exactly behind the other

The angle of elevation of the top of a tower from a point on the ground which is 30 m away from the foot of the tower, is 30°. Find the height of the tower.

The length of the shadow of a tower on the plane ground is √3 times the height of the tower. Find the angle of elevation of the sun.

An aeroplane when flying at a height of 3000 m from the ground passes vertically above another aeroplane at an instant when the angles of elevation of the two planes

A ladder set against a wall at an angle 45° to the ground. If the foot of the ladder is pulled away from the wall through a distance of 4 m,          

A spherical balloon of radius r subtends an angle of 60° at the eye of an observer. If the angle of elevation of its centre is 45° from the same point,

The angle of elevation of the top of a tower 24 m high from the foot of another tower in the same plane is 60°. The angle of elevation of the top of second tower