SOLUTION: the resultant of two force is 73lb find the angle between it and each of the forces if they are 45 and 51 lb

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Question 986535: the resultant of two force is 73lb find the angle between it and each of the forces if they are 45 and 51 lb
Answer by vleith(2983) About Me  (Show Source):
You can put this solution on YOUR website!
Lets assume the force is along the x axis. Lets assume the 51lb force is also along the x axis.
What angle is the 45lb force at wrt to the x axis such that the total force along x is 73?
73+=+51+%2B+45%28cos%28x%29%29
%2873+-+51%29%2F+45+=+cos%28x%29
0.489+=+cos%28x%29
arccos%280.0489%29+=+x
60.7 degrees =x