Question

two forces 3N and 4N act on 20kg mass. calculate the magnitude of the resultant force if the angle between the two forces is 60°​

Answer 1

Step-by-step explanation:

R^2= a^2+b^2-2(ab)cos(180-&)

Answer 2

Step-by-step explanation:

In the picture.

I hope that it's a clear solution.