Posted by Krista on Sunday, April 7, 2013 at 6:12pm.
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)

Vectors/Calculus  Steve, Sunday, April 7, 2013 at 6:16pm
so, call the 3 points a,b,c
u=ba = (1,2,3)
v=ca = (3,0,0)
now use the determinant to figure u x v

Vectors/Calculus  Krista, Sunday, April 7, 2013 at 6:18pm
Thank you!
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