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Physics 9 Online
OpenStudy (anonymous):

Completely Lost....Vector A⃗ points in the negative x direction. Vector B⃗ points at an angle of 26.0∘ above the positive x axis. Vector C⃗ has a magnitude of 20m and points in a direction 46.0∘ below the positive x axis. Given that A⃗ +B⃗ +C⃗ =0, find the magnitudes of A⃗ and B⃗. Express your answer using two significant figures.

OpenStudy (festinger):

First, resolve the forces to it's x and y components.

OpenStudy (anonymous):

|dw:1375068825008:dw|

OpenStudy (anonymous):

|dw:1375069518621:dw| So using the equations, what do I plug in for "B" since i dont have the magnitude for it?

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