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Given the points P, Q, and R, how do we know that the vectors PQ (cross product) PR is perpendicular to both PQ and PR?

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Given the points P, Q, and R, how do we know that the vectors PQ (cross product) PR is perpendicular to both PQ and PR?

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Step 1

Given that there are three pints in the plain P,Q and R.

The ...

PQXPR - |PO||PR|Sine
Where 0 is angle between PQ and PR.
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PQXPR - |PO||PR|Sine Where 0 is angle between PQ and PR.

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Math

Calculus

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