Angle of Elevation and Depression

From a window 15 metres high above the ground in a street, the angles of elevation and depression of the top and the foot of another house on the opposite side of the street are 30^0a n d45^0 respectively show that the height of the opposite house is 23.66 metres (t a k esqrt(3)=1. 732)

The angles of elevation and depression of the top bottom of a light-house from the top of a 60m high building are 30^0a n d60^0 respectively. Find the difference between the heights of the light house and the building. the distance between the light-house and the building.

The angles of elevation and depression of the top bottom of a light-house from the top of a 60m high building are 30^0a n d60^0 respectively. Find the difference between the heights of the light house and the building. the distance between the light-house and the building.

From a window, 60 metres high above the ground, of a house in a street, the angles of elevation and and depression of the top and foot of another house on the opposite side of the street are 60o and 45o respectively. Show that the height of the opposite house is 60(sqrt3+1) metres.

A man of height 6 ft. observes the top of a tower and the foot of the tower at angles of 45^@ and 30^@ of elevation and depression respectively. The height of the tower is

The angle of elevation of an aeroplane from a point P on the ground is 60^@ . After a flight of 15 seconds, the angle of elevation changes to 30^@ . If the aeroplane is flying at a constant height of 1500 sqrt3 m, find the speed of the aeroplane

The angle of elevation of a stationary cloud from a point 25 m above a lake is 30^(@) and the angle of depression of its reflection in the lake is 60^(@) . What is the height of the cloud above that lake-level ?

The angle of elevation of a stationary cloud from a point 2500 feet above a lake is 30^@ and the angle of depression of its reflection in the lake is 45^@ .Find the height of cloud above the lake water surface .

The angle of elevation of a stationery cloud from a point 2500 m above a lake is 15o and the angle of depression of its reflection in the lake is 45o . What is the height of the cloud above the lake level? (Use tan15o=0. 268 )

A man standing on the bank of a river observes that the angle of elevation of a tree on the opposite bank is 60^(@) . When he moves 50 m away from the bank, he finds the angle of elevation to be 30^(@) . Calculate : the height of the tree.