The greatest and the least resultants of two forces acting at a point are F and G respectively. If x be the angle between the lines of action of the forces, then show that their resultant is given by√F²cos²(x÷2)+G²sin²(x÷2)

Eshan
4 years ago
Let the vectors beand.

Then ,and

and

The resultant of the two vector is




Also we know

Resultant