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30 September, 18:53

Find the unit vector u^ in the second quadrant of r2 that makes an angle of 2π/3 radians with the x-axis

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  1. 30 September, 20:06
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    That vector is ...

    ... cos (2π/3) i + sin (2π/3) j = - 0.5i + (√3) / 2j
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