ABCD is a square plot. If the angle of elevation of the top of the pole standing at D from A or C is `30^(@)` and that from B is `theta`, then `cot theta-sqrt(6)` is

ABCD is a square plot.The angle of elevation of the top of a pole standing at D from A and C is 30^(@) and that from B is theta, then tan theta is equal to

The angle of elevation theta of the top of a tower is 30^(@) . If the height of the tower is doubled, then new tan theta will be

The angle of elevation of the bottom of a window 10 m above the ground level from a point on the ground is 30^@ A pole projecting outwards from the bottom of the window makes an angle of 30^@ with the wall. If the angle of elevation of the top of the pole observed from the same point on the ground is 60^@, find the length of the pole to the nearest whole number.

A person observes that the angle of elevation of the top of a pole of height 15 metre is 30^(@) .What is the distance (in metres) of the person from the pole ?

An observer who is 1.62m tall is 45m away from a pole . The angle of elevation of the top of the pole from his eyes is 30^(@) . The height ( in m ) of the pole is closest to :