While measuring the distance between two points along upgrade with the help of a 20 m chain, the forward end of the chain is shifted forward through a distance
Options
A. 20 (sin ? - 1)
B. 20 (cos ? - 1)
C. 20 (sec ? - 1)
D. 20 (cosec ? - 1).
Correct Answer
20 (sec ? - 1)
More questions
1. Rotation of the camera at exposure about horizontal axis normal to the line of flight, is known as