Two football players A and B from opposing teams start from the same corner. A runs 35 m East, then 15 m South, turns to his right and runs 60 m.Meanwhile B runs 20 m North, then 25 m West, turns left and runs 20 m. What is the position of B with respect to A?
Two circles of same radius intersect each other at P and Q. If the length of the common chord is 30 cm and distance between the centres of the two circlesis 40 cm, then what is the radius (in cm) of the circles?
The angle of elevation of the top of a pillar from the foot and the top of a building 20 m high, are 60° and 30° respectively. The height of the pillar is