Given equation of circle x2+y2=3 Chord of contacts of tangents drawn from L1,L2 and L3 are 2x=3,x−2y=3 and 4x+4y=3 respectively. For concurrent lines, For concurrent lines, Let ∆=|
2
0
−3
1
−2
−3
4
4
−3
| =2(6+12−3(4+8) =36−36=0 Hence, the three lines are concurrent.