the resultant of two forces acting on a body has a magnitude of 60 pounds. the angle between the 26 pound force and resultant is 61 degrees. find the magnitude of the other force

Answer 1

Draw and label a diagram. The other force is tail to the 26 lb and tip to the 61 lb.

Using the law of Cosines

m² = 26²+ 60² - (26)(60) - 2(26)(60) cos 61°

After you determine m, use the Law of Sines to determine angle.