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5 December, 14:56

Find the measure of the angle between two forces of 30 pounds and 35 pounds if the magnitude of their resultant is 42 pounds

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  1. 5 December, 18:56
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    80 degrees

    Step-by-step explanation:

    42^2=30^2+35^2-2 (30) (35) cosx

    1764=2125 - (2100) (cosx)

    -361 = - 2100cosx

    -361/-2100=cosx

    0.1719047619=cosx

    cos^-1x=80.10141556

    Round off to the nearest degree=80
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