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ok can someone tell me how to determine if three vectors form a right hand triple? and why does (a-b)x(a+b)=2(axb)....

plz someone help, im really confused on how to do these.... arent just three vectors a right hand triple if the dot product between them all is 0?? im not sure though plz someone help.. and the second one.. the must be a formula or a property i cant find... thanks

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# Homework Help: Determine if three vectors form a right hand triple?

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