A force of125 N pulls due west on a body, and a second force pulls N 28.7 degrees W. The resultantforce is 212 N. Find the second force and the direction of the resultant.

Answer 1

You have angle.side.side

Law of cosines first to find the second force
R^2=1st^2+sec^2-2*1st*Sec*cosTheta

solve for sec.

one you have the second force, use the law of sines to find the resultant angle. Draw a sketch first