If D is the distance between the parallel sidings and ? is the angle of crossing, the distance between the noses of crossing measured parallel to the gathering line, is
Options
A. D tan ?
B. D cot ?
C. D sin ?
D. D cos ?
Correct Answer
D cot ?
More questions
1. The most ideal disinfectant used for drinking water throughout the world, is
4. The masses of two balls are in the ratio of 2 : 1 and their respective velocities are in the ratio of 1 : 2 but in opposite direction before impact. If the coefficient of restitution is , the velocities of separation of the balls will be equal to
Options
A. original velocity in the same direction
B. half the original velocity in the same direction
C. half the original velocity in the opposite direction