if a line makes 60 degree angle with positive direction of x and makes 45 degree with positive direction of Y. then what is the angle made by negative direction of Z
Let the direction cosines of the line be l,m and n.
We know that l2+m2+n2= 1.
Let the line make angle θ with the positive direction of the z-axis.
We know that l2+m2+n2= 1.
Let the line make angle θ with the positive direction of the z-axis.