# Point line and the distance

## Homework Statement

$$x=4-t, y=3+2t, z=-5+3t (-\nfty<t<\infty)$$

2. find the distance between the point (3, 1, -2) and the plane $$x+2y-2z=4$$

3 find the principle unit notmal N, the curvature , and the radius of curvature for the plane curve $$r(t)=ti+(sint)j$$

dx
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