If \(\vec a, \vec b\:and \: \vec c\) are coplanar, then what is \((2 – McqOptions

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1.	If \(\vec a, \vec b\:and \: \vec c\) are coplanar, then what is \((2\vec a\times 3\vec b)\cdot4\vec c+(5\vec b\times 3\vec c)\cdot6\vec a\) equal to?
A.	114
B.	66
C.	0
D.	-66
Answer» D. -66

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