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First force is not measured in pounds but in newtons so I will pretend the forces are 90 N and 100 N.
Now we can calculate the magnitude of resultant force by using law of cosine (see the image below).
`R=102.4363` <-- Magnitude
Now we can calculate the direction. In order to do that we will first calculate the angle between vector `veca` and resultant vector `vecR` by using law of sine.
`alpha=62^o13'16''` ` `
Now we subtract that from 55° (direction of vector `vecb` ) to get direction of resultant force.
`55^o-62^o13'16''=-7^o13'16''` <-- Direction
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