If the equation `7x^(2)-kxy-7y^(2)=0` represents the bisectors of angles between the lines `2x^(2)-
Channel: Doubtnut
Date: 2020-05-24

If the equation `7x^(2)-kxy-7y^(2)=0` represents the bisectors of angles between the lines `2x^(2)-7xy+4y^(2)=0` then: `k=`