When observed from a point on the horizontal line passing through the base point of a vertical tower the angle of elevation of the highest point of the tower was found to be` 30^@`.If the distance from the tower to the point of observation is 200m,find the height of the tower.

The angle of depression of the top and bottom of a tower are found to be 30^@ and 60^@ respectively when the tower is observed from the top of a hill 100m high.Find the height of the tower.

The distance from the point (7,1,a) to the point (4,5,9) is 5. Find the value of a.

Using determinant find the straight line passing through the points (3,1) and (9,3).

Find the equation of the line passing through the points (1,3) and (-2,-1).

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

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 50 m high,find the height of the building

The angle of elevation of the top of a hill at the foot of the tower is 60° and the angle of elevation of the top of a tower from the foot of the hill is 30°.If the tower is 50m high, find the height of the hill.

The angle of elevation of the top of a temple when observed from a point on the horizontal line through the foot of the temple is found to be 30^@ .By advancing 200m towards the temple the angle of elevation of the top of the temple is found to be 60^@ .Find the height of the temple.

From the top of a 7 m high building ,the angle of elevation of the top of a cable tower is 60^@ and the angle of depression of its foot is 45^@ .Determine the height of the tower.

When observed from the top of a 125 m high building,the angle of depression of a car was found to be 30^@ .Find the distance of the car from the building.