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Find the angle between the vectors $\hat{i} + \hat{j}$ and - $\hat{j}$

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detailed solution

Correct option is C

(i^+j ^)(-j^)= -1i^+j^ -j^cos θ=-1 2cosθ =-1 cos θ= -12 θ = 135o

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Find the angle between the vectors i^+j^ and -j^

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Find the angle between the vectors $\hat{i} + \hat{j}$ and - $\hat{j}$