Question

If the direction cosines of a certain vector are cos a =1/2, cos B=-11-12 then the angle with
respect to the Z-axis may be
7 = 30°
7=150°
y=135°
7=60°​

Answer 1

Step-by-step explanation:

If the direction cosines of a certain vector are cos a =1/2, cos B=-11-12 then the angle with

respect