hello, i'm taking electrodynamics, and to begin we're doing vector algebra/calculus.(adsbygoogle = window.adsbygoogle || []).push({});

here's the problem i'm faced with. there's a triangle defined by the points.

(1,0,0)

(0,2,0)

(0,0,3)

the task at hand is finding the unit vector orthogonal to the defined plane. the method that occured to me was to find two of the sides of the triange. from there, i could divide the resulting vector by the magnitude (abcos(theta)), giving me n-hat.

in any case, it's been along time since trig, and i'm not sure how i should get the angle theta between the two selected sides. maybe i'm not doing it right, i don't know. any advise would be appreciated!

cheers

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# Homework Help: Vector algebra (i guess?)

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