1.

Let V1 = 2I - J + K and V2 = I + J - K, then the angle between V1 u0026 V2 and a vector perpendicular to both V1 u0026 V2 shall be:

A. 90? and (-2I + J - 3K)
B. 60? and (2I + J + 3K)
C. 90? and (2I + J - 3K)
D. 90? and (-2I - J + 3K)
Answer» E.


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