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Math Help - inverse Kinematics/change of subject formular

  1. #1
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    Post inverse Kinematics/change of subject formular

    I need to make a,b,c subject of formular in terms of x,y,z? for this set of equations

    x=cos(a)*[kcos(b+c)-msin(b+c)-nsin(b)]
    y=sin(a)*[kcos(b+c)-msin(b+c)-nsin(b)]
    z=[ksin(b+c)-mcos(b+c)-ncos(b)

    Where k=3.0 ,m=2.75 ,n=2.75
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  2. #2
    Grand Panjandrum
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    Quote Originally Posted by debobbt View Post
    I need to make a,b,c subject of formular in terms of x,y,z? for this set of equations

    x=cos(a)*[kcos(b+c)-msin(b+c)-nsin(b)]
    y=sin(a)*[kcos(b+c)-msin(b+c)-nsin(b)]
    z=[ksin(b+c)-mcos(b+c)-ncos(b)

    Where k=3.0 ,m=2.75 ,n=2.75
    Start by dividing the second by the first to get:

    \tan(a)=\frac{y}{x}

    Then you might find it useful to change variables to u=b+c and v=b

    CB
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