P and Q are two points observed from the top of a building 10√3 m high. If the angles of depression of the points are complementary and PQ = 20 m, then the distance of P from the building is (Given that distance of P from the building is more than distance of q)

P and Q are two points observed from the top of a building 10√3 m high. If the angles of depression of the points are complementary and PQ = 20 m, then the distance of P from the building is (Given that distance of P from the building is more than distance of q)
1). 25 m
2). 45 m
3). 30 m
4). 40 m

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