Mathematics · essential
Condition for concurrence of three lines for JEE
Conditions for concurrence of three lines, the distance of a point from a line
Formula
\(\begin{vmatrix}a_1&b_1&c_1\\ a_2&b_2&c_2\\ a_3&b_3&c_3\end{vmatrix}=0\)
Variables: Lines are \(a_ix+b_iy+c_i=0\), \(i=1,2,3\).
Testing whether three lines pass through one point.