pre-cal

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Three forces with magnitudxes 100, 50 and 80 lbs act on an object at angles of 50 degree, 160 degree and -20 degree respectively.

  • pre-cal -

    I assume you want the resultant force? Just convert the polar coordinates to rectangular, add them, and convert back to polar:

    (100,50°) = (64.28,76.60)
    (50,160°) = (-46.98,17.10)
    (80,-20°) = (75.18,-27.36)
    add them to get
    (92.48,66.34) = (113.81,35.65°)

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