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From the top of a tower,the angle of depression of a point P on the ground is 30^(@) . If the distance of the point P from the tower be 24 meters then height of the tower is

A current of 6A flows through a coil when connected to a 24 volt d.c. supply. To get the same current with a 50 Hz a.c. supply, the voltage required is 30 V. What is the power factor of the coil?

The horizontal distance between two poles is 15m. The angle of depression of the top of first pole as seen from the top of second pole is 30. If the height of the second pole is 24m, find the height of the first pole.Use v3=1.732)

The horizontal distance between two poles is 15m. The angle of depression of the top of the first pole as seen from the top of the second pole is 30o .If the height of the second pole is 24m, find the height of the first pole.(sqrt(3)=1.732)

An observer 1.6m tall is 20sqrt(3)m away from a tower.The angle of elevation from his eye to the top of the tower is 30o .The height of the tower is: (a) 21.6m (b) 23.2m(c)24.72m (d) None of these

A bucket open at the top,and made up of a metal sheet is in the form of a frustum of a cone.The depth of the bucket is 24cm and the diameters of its upper and lower circular ends are 30cm and 10 cm respectively.Find the cost of metal sheet used in it at the rate of Rs 10 per 100cm^(2) .