When a mass is rotating in a plane about a fixed point, its angular momentum is directed along.
A. radius
B. tangent to the orbit
C. axis of rotation
D. circumference of the circle

When a mass is rotating in a plane about a fixed point, its angular momentum is directed along.
A. the radius
B. the tangent the orbit
C. the line at angle of `45^(@)` to the plane of rotation
D. the axis of rotation

When a mass is rotating in a plane about a fixed point, its angular momentum is directed along.
A. a line perpendicular to the plane of rotation
B. the line making an angle of `45^(@)` to the plane of rotation
C. the radius
D. the tangent to the orbit