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Find the resultant of the forces 10N and 15N with an angle of 120 between them.

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say 15 N along x axis
and 10 N 60 deg above -x axis

x force = 15 - 10 cos 60 = 10

y force = 10 sin 60 = 8.66

magnitude = sqrt(100+8.66^2)

tan angle above +x axis = .866

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