What are the direction cosines of the y-axis? | Filo

Class 12

Math

3D Geometry

Three Dimensional Geometry

570
150

What are the direction cosines of the y-axis?

Solution:
If and are the angles made by the line segment with the coordinate axis.
and are called as the direction cosines and are usually denoted by and
and

Clearly the y-axis makes an angle of ie., with the x-axis, y-axis, z-axis respectively
so its direction cosines are ie.,
570
150

Connecting you to a tutor in 60 seconds.