VectorHard

Question

The value of x for which the angle between the vectors = −3î + xĵ + and = xî + 2xĵ + is acute and the angle between b and x- axis lies between π/2 and π satisfy-

Options

A.x < − 1 only
B.x > 0
C.x > 1 only
D.x < 0

Solution

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