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Let \(A = (1, 0, -1), B = (2, 3, 1),\) and \(C = (0, 1, 1)\). Then what are the vectors \(\overrightarrow{AB}, \overrightarrow{AC},\) and \(\overrightarrow{BC}\), in that order? (The first column of your answer should be the first vector, etc.)

 Mar 14, 2019
 #1
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A = ( 1, 0, -1)       B = (2, 3, 1)      C = (0, 1, 1)

 

vector AB  =   (  2 - 1, 3 - 0 , 1 - -1 )  =  ( 1, 3, 2)

 

vector AC =  ( 0 - 1, 1 - 0, 1 - -1)  =  ( -1, 1, 2)

 

vector BC = ( 0 - 2, 1 - 3, 1 - 1)  = (  -2, -2, 0 )

 

 

cool cool cool

 
 Mar 15, 2019

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