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))`

Options

A. If both Assertion `&` Reason are True `&` the Reason is a correct explanation of the Assertion.
B. If both Assertion `&` Reason are True but Reason is not a correct explanation of the Assertion.
C. If Assertion is True but the Reason is False.
D. If both Assertion `&` Reason are false.

Answer

A

Explanation

`cos theta=(vecA.vecB)/(AB)=((hati+hatj).(hatj+hatk))/((sqrt(2))(sqrt(2)))=(1)/(2)`