Let A,B and C three fixed points and M a variable point in space

show that the vector v=MA^MB+ MB^MC+MC^MA is aqual to AB^AC

note: all have vector on them but am using my cell phone and ^:means cross

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- Apr 17th 2012, 05:46 AMlebanonVector question
Let A,B and C three fixed points and M a variable point in space

show that the vector v=MA^MB+ MB^MC+MC^MA is aqual to AB^AC

note: all have vector on them but am using my cell phone and ^:means cross - Apr 17th 2012, 07:06 AMemakarovRe: Vector question
Use the last property in the section "Algebraic Properties" of the Wikipedia article about the cross product and note that AB x AC = AB x BC.