Mathematics · essential
Perpendicular lines condition using slope for JEE
The slope of a line, parallel and perpendicular lines
Formula
\(m_1m_2=-1\)
Variables: \(m_1,m_2\) are slopes of two non-vertical lines.
Conditions: Equivalent special case: one line vertical and the other horizontal.
Orthogonality, altitudes, tangent-normal problems.