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IF A = 2x+3y and B = -x+y, then the angle between the resultant A+B and the positive directio of x-axis is

  • Physica -

    Ax=2, Bx= - 1 => (A+B)x=2-1=1
    Ay=3, By= 1 => (A+B)y=3+1=4
    tanα=(A+B)y/(A+B)x =4/1=4,
    α =arctan4=76º

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