The members of a truss are pin connected at joint O. Determine the magnitudes of F1 and F2 - 3-1

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3–1. The members of a truss are pin connected at joint O. Determine the magnitudes of F1 and F2 for equilibrium. Set θ=60°.
3–2. The members of a truss are pin connected at joint O. Determine the magnitude of F1 and its angle θ for equilibrium. Set F2=6 kN.

Problem from Engineering Mechanics Statics, Fifteenth Edition.
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This dude is gonna save my statics exam grade

jonathansdean
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Why is it positive f2 when you move it to the other side isn’t it negative f2?

jasonalvarez