Asked by Anonymous
Find the area of the triangle whose vertices are A(1,0,1), B(2,-1,3), C(5,2,2).
Answers
Answered by
oobleck
This is calculus?
Find the side lengths, and then use Heron's formula.
AB = √6
and so on
or, find vectors AB and AC and then the area of the triangle is 1/2 their cross-product.
Find the side lengths, and then use Heron's formula.
AB = √6
and so on
or, find vectors AB and AC and then the area of the triangle is 1/2 their cross-product.
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