The vectors \(λ \widehat i + \widehat j + 2\widehat k\), \(\widehat – McqOptions

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1.	The vectors \(λ \widehat i + \widehat j + 2\widehat k\), \(\widehat i + λ \widehat j - \widehat k\) and \(2\widehat i - \widehat j + λ \widehat k\) are coplanar if λ =
A.	-2
B.	0
C.	1
D.	-1
Answer» B. 0

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