- 12

- 0

**1. Homework Statement**

Find an equation of the line through the point A (4,5,5) which meets the line (x-11)/3 = (y+8)/-1 = z-4 at right angles.

**2. Homework Equations**

**3. The Attempt at a Solution**

well i know that the direction of the given line is d(3,-1,1) and the original line crosses through the point (11,-8,4)

The direction of the new line must be able to dot with the old line to get 0 (thus right angles).

I dont know how to find a direction that i know will pass through A.

Help or hint please