If a line makes the angle 30°, 60°, and 90° with the positive direction of X, Y and Z-axes respectively. then the direction cosines will be-
Answer & explanation
Correct answer: option 2
Let the direction cosines of the lines be l, m, n. Then l= cos(30°)=√3/2 , m= cos(60°)= 1/2, n = cos(90°) = 0