In the calculations involving the collar bearings and the pivot bearings, we use cross product. In that mathematically, for two vectors A and B of any magnitude, the cross product of both, i.e. AxB = given by:
(a) |A||B|sinØ
(b) |A||B|
(c) |A||B|cosØ
(d) |A||B|sin(180°+Ø)
The question was posed to me by my school teacher while I was bunking the class.
This interesting question is from Frictional Forces on Collar Bearing, Pivot Bearings and Disks in division Friction of Engineering Mechanics