Got it..............or not...??????????
A person wishing to ascertain the height of a tower stations himself on a horizontal plane through its foot at a point at which the elevation of the top is 30 degree . on walking a distance A in a certain direction he finds that the elevation of the top is same as before,and on walking a distance 5/3A at right angles to his former direction , he finds that the elevation of the top is 60 degree then the height of tower will be .? if your answer is X then write X^2=