Assertion: The angle between the two vectors `(hati+hatj)` and `(hatj_hatk)` is `(pi)/(3)`

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Assertion: The angle between the two vectors `(hati+hatj)` and `(hatj_hatk)` is `(pi)/(3)` radian. Reason: Angle between two vectors `vecA` and `vecB` is given by `theta=cos^(-1)((vecA.vecB)/(AB))`
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