Given and , the angle between and…

MATHEMATICS · Single correct · CBSE · Mathematics · Vector Algebra · Vector Algebra

Problem

Given a=⟨3,−2,1⟩\mathbf{a}=\langle 3,-2,1\rangle and b=⟨1,4,−2⟩\mathbf{b}=\langle 1,4,-2\rangle, the angle between a\mathbf{a} and b\mathbf{b} is (a) acute (less than 90∘90^{\circ}) (b) obtuse (greater than 90∘90^{\circ} but less than 180∘180^{\circ}) (c) right angle (90∘90^{\circ}) (d) cannot be determined from the given data

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