The angles of elevation of the top of a lighthouse from 3 boats A, B and C in a straight line of same side ofthe light house are a, 2a, 3a respectively. If the distance between the boats A and B and the boats B and Care x and y respectively find the height of the light house?

If the angles of elevation of the top of a water from three collinear points, B and C, on a line leading to the foot of the tower, are 30^@, 45^@ and 60^@ respectively, then the ratio, AB:BC,is:

The angle of depression of two boatsm as observes from the masthead of a ship, 50m high, are 45^@ and 30^@ , respectively. The distance between the boats, if they are on the same side of the masthead, is

An observer on the top of a monument 500 m above the sea level, observes the angles of depression of the two boats to be 45^@ and 30^@ respectively. Find the distance between the boats if the boats are- On the same side of the monument,

As seen from the deck of a ship the angle of elevations of the top and bottom of light house situated on the seaside are 60^@ and 30^@ . If the lgiht house is located 8 metre above the sea level and the deck of the ship[ is at a height of 3 metre from sea level, then what is the height of the light house?

If the angle of elevation of the top of a tower from two points distant a and b from the base and in the same straight line with it are comple mentary, then the height of the tower is____

The angular elevations of the top of a tower from two points in the same horizontal line with its foot and observed to be theta and phi respectively. Find the distance between the two points of observation, if the height of the tower is h.

An observer on the top of a monument 500 m above the sea level, observes the angles of depression of the two boats to be 45^@ and 30^@ respectively. Find the distance between the boats if the boats are- On the opposite sides of the monument,

The angles of elevation of the top of a tower from two points at a distance of 4 m and 9 m, find the height of the tower from the base of the tower and in the same straight line with it are complementary.

The angle of elevation of the top of a tower a point A due south of it is 30^@ and from a point B due west of it is 45^@ .If the height of the tower is 100 meters ,then find the distance AB.

The bottom of a light house and bottom of the mast of two ships are on the same straight line and the angles of depression from the light house at the bottom of mast of two ships are 60^(@) and 30^(@) respectively. If the distance of the points at the bottom of the light house and the bottom of the mast of first ship is 150 metres, calculate how far will the mast of the other ship from the light house be and what will the height of light house be.