Find the distance form the point P= (1,1,6) to the line x= 1+t y=3-t z=2t This isn't a question about circles or using a circle to get to the answer, so please only using linear algebra rules and formulas. Thanks
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$\displaystyle \displaystyle <1,1,6> \ u=<1,-1,2> \ PQ<0,2,6>$ $\displaystyle \displaystyle \frac{\begin{bmatrix} i & j & k\\ 0 & 2 & 6\\ 1 & -1 & 2 \end{bmatrix}}{||u||}$
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