A vector `vecc` of magnitude `sqrt(7)` which is perpendicular to the
Channel: Doubtnut
Date: 29/03/2020

A vector `vecc` of magnitude `sqrt(7)` which is perpendicular to the vector `veca=2hatj-hatk` and `vecb=-hati+2hatj-3hatk` and makes an obtuse angle with the y-axis is given by