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## Homework Statement

Find the area of the triangle with vertices at the points with coordinates (1,2,3), (4,-3,2) and (8,1,1)

## Homework Equations

## The Attempt at a Solution

well area of a triangle is 0.5 x base x height . We can get the length of each side by taking the modulus of each vector, but the problem we have is finding the height. We need to find a the point where a line between 2 vectors cuts the other vector at 90° (the base)

How do we find this line?

Thanks

Thomas

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