In Fig. 12.58, what are the angles of depression from the observing positions `O_1` and `O_2` of the object at `A` ? (FIGURE)

If the angle of depression of an object from a 75 m high tower is 30^@ , then the distance of the object from the tower is

In fig what is the angle of elevation of point A from C and angle of depression of point D from A?

From the top a mast of 180 mt high, the angle of depression of an object is 60^@ The distance of the object from the ship is

A man on the deck of a ship is 10m above the water level. He observes that the angle of elevation of the top of a cliff is 45o and the angle of depression of the base is 30o . Calculate the distance of the cliff from the ship and the height of the cliff.

A man on the deck of a ship is 10m above the water level.He observes that the angle of elevation of the top of a cliff is 45o and the angle of depression of the base is 30o . Calculate the distance of the cliff from the ship and the height of the cliff.

In Fig, O is the center of the circle. Find the angle of triangleABC .

From the top of a building of height h meter, the angle of depression of an object on the ground is theta . What is the distance (in meter) of the object from the foot of the building ?

From the top of a building of height h m, the angle of depression of an object on the ground is theta. What is the distance (in m) of the object from the foot of the building?

From the top of a building h meters, the angle of depression of an object on the ground is alpha . the distance( in meter) of the object from the foot of the building is