SOLUTION: Two forces with a magnitude of 77 pounds and 45 pounds and an angle of 43 degrees between them are applied to an object. Find the magnitude of the resultant vector to the nearest w

Algebra ->  Trigonometry-basics -> SOLUTION: Two forces with a magnitude of 77 pounds and 45 pounds and an angle of 43 degrees between them are applied to an object. Find the magnitude of the resultant vector to the nearest w      Log On


   

Question 1123199: Two forces with a magnitude of 77 pounds and 45 pounds and an angle of 43 degrees between them are applied to an object. Find the magnitude of the resultant vector to the nearest whole number.
Answer by ikleyn(52790) About Me  (Show Source):
You can put this solution on YOUR website!
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Apply the parallelogram rule of adding forces and the cosine law formula. 

    The magnitude of the resultant vector = sqrt%2877%5E2+%2B+45%5E2+-+2%2A77%2A45%2Acos%28180%5Eo-43%5Eo%29%29 pounds.