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The question asks me to find the area of the triangle with the given vertices. (The area A of the triangle having u and v as adjacent sides is given by A=1/2 ||u x v||.)

the vertices are:
(0,0,0) (1,2,3) (-3,0,0)
12 years ago

Answers

Steve
so, call the 3 points a,b,c
u=b-a = (1,2,3)
v=c-a = (-3,0,0)
now use the determinant to figure ||u x v||
12 years ago
Krista
Thank you!
12 years ago

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