Tangent Lines
You can describe a line that is tangent to another line i.e. a line that has an opposite gradient and cuts that line at a perpendicular angle by taking the negative reciprocol of the first line’s gradient.
\[ m’ = -\frac{1}{m} \]
You can describe a line that is tangent to another line i.e. a line that has an opposite gradient and cuts that line at a perpendicular angle by taking the negative reciprocol of the first line’s gradient.
\[ m’ = -\frac{1}{m} \]