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    Vector Operations Direction Angles

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    Given vector v with /v/ = 4 and direction angle of 45 degrees, write v in the form <a,b>
    a= 4cos 45 degrees= 4*.707=2.83
    b= 4sin 45 degrees= 4*.707=2.83
    vector v (a,b) becomes v(2.83, 2.83)

    compute (2*w).(u-v) where w = <-1, 0>
    =6.144<282.5 or 6.144<-77.5degrees
    vector from equation is it

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    Solution Summary

    The expert examines vector operations direction angles.