If the angle of elevation of the top of monument when observed from a point on the roof of a five-stories building of 18 metre height is `45^@` and the angle depression of the foot of the monumenbt. When observed from the same pointy is `60^@`. Calculate the height of the monument. `[sqrt3= 1.732]`

If the angle of elevation of the top of a Monument when observed form a point on the roof of a five storied building of 18 metre height is 45^@ and the angle of depression of the foot of the Monument, when observed from the same point 60^@ . What is the height of the MOnument?

If the angle of elevation of the top and Monument when observed from a point on the roof of a building of 16 metre height is 60^@ and the angle of depression of the foot of the Monument, when observed from the same point is 30^@ , calculate the height of the Monument and the distance from Monument to the building.

If the angle of elevation of the top of a chimney from a point on the horizontal plane passing through the foot of the chimney is 60^(@) and the angle of elevation from another point on the same plane at a distance of 24 metres away from the first point is 30^(@) . Calculate the height of the chimney. [sqrt(3)= 1.732 (approx). ]

When the top of a chimney of a factory is seen from a point on the roof of the three storied building of 9sqrt(3) metre height, the angle of elevation is 30^(@) . If the distance between the factory and chimney is 30 metres, calculate the height of the chimney.

The length of the shadow of a tower is 9 metres when the sun's angle of elevation is 30^(@) . Calculate the height of the tower.

The angle of elevation of the top of a tower from a point O on the ground, which is 450 m away from the foot of the tower, is 40^(@) . Find the height of the tower.

From a point on the roof of five-storied building the angle of elevation of the top of a monument and that of angle of depression of the foot of the monument are 60^(@) and 30^(@) respectively. If the height of the building is 16 metres, calculate the height of the monument and the distance of the building from the monument.

The angle of elevation of the sun when the shadow of a pole of height 9 metres is 3sqrt(3) metres long is

The angle of elevation of the top of the tower observed from each of the three points A,B,C on the ground, forming a triangle is the same angle prop . If R is the circum-radius of the triangle ABC, then the height of the tower is