determine the resultant of two coplanar forces (200N, 60°) and (85N, 280°)

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1 Answer

280° is the same as -80°. The horizontal resultant is 200cos60+85cos80=114.7601N approx.

The vertical resultant is 200sin60-85sin80=89.4964N approx. The resultant force is √114.7601^2+89.4964^2=145.5317N approx. The angle is arctan(114.7601/145.5317)=52.05° approx.

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