Raj left for his office in a car. He drove 15 km towards North and then 10 km towards West. He then turned to the South and covered 5 km. Further he turned to the East and moved 8 km. Finally he turned right and drove 10 km. In which direction is he from his starting point?
From the top of a platform 7 m high, the angle of elevation of a tower was 30 deg. If the platform was positioned 50√3 m away from the tower, how tall was the tower?