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Angle between Two Planes

If θ is the a...

Question

If θ is the angle between any two vectors and, then when θisequal to

(A) 0 (B) (C) (D) π

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Solution

Let θ be the angle between two vectors and.

Then, without loss of generality, and are non-zero vectors, so that.

Hence, when θisequal to.

The correct answer is B.

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Let and be two unit vectors andθ is the angle between them. Then is a unit vector if

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Q. If θ is the angle between any two vectors and , then when θ isequal to (A) 0 (B) (C) (D) π

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