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25 February, 21:38

Say its x component has a value of - 15, and its y component also has a value of - 15. what's the magnitude of this vector? what angle does it make with the positive x-axis?

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  1. 25 February, 22:18
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    Magnitude = sqrt ((-15) ^2 + (-15) ^2)

    = sqrt 450 = 21.21 to nearest hundredth

    Angle it makes with the positive x axis = arctan (-15/-15)

    = 180 + 45

    = 225 degrees answer
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