Top of a building was observed at an angle of elevation `alpha` from a point. Which is at distance 'd' meters from the foot of the building. Which trigonometrical ratio should be considered for finding height of buildings?

You are observing top of your school building at an angle of elevation alpha from a point which is at 'd' meter distance

From the top of a tree, a man observes the angle of deppression of a point which is at distance of 40 metres from the foot is 75^(@) . The height of the tree is

The top of a clock tower is observed at angle of elevation of alpha^(@) and the foot of the tower is at the distance of d meters from the observer. Draw the diagram for this data.

The angles of elevation of a tower from two points which are at distances h_1 and h_2 from the foot of the tower on the same side are complementary. The height of the tower is

The angles of elevation of a tower from two points which are at distance h_(1) and h_(2) from the foot of the tower on the same side are complementrary. The height of the toweer is

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

The angle of elevation of the top of a building from the foot of the tower is 30^(@) and the angle of elevation of the top of the tower from the foot of the building is 60^(@) . If the tower is 30m high, find the height of the building.

Ladder 'x' meters long is laid against a well making an angle 'theta' with the ground. If we want to directly find the distance between the foot of ladder and foot of the wall, which trigonometrical ratio should be considered?