Metallurgical Engineering > GATE 2020 > Vectors
Given the three vectors X = -i - j + k, Y = -i + 2j + k and Z = i + k, which one of the following statements is TRUE?
A
X, Y and Z are mutually perpendicular.
B
X, Y and Z are coplanar.
C
X makes an angle of 30o with the normal to the plane containing Y and Z.
D
Z makes an angle of 60o with the normal to the plane containing X and Y.

Correct : a

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