Jambmaths question:
Calculate the distance between L ( –1, –6) and M(–3, –5)
Option A:
$\sqrt{5}$
Option B:
$2\sqrt{3}$
Option C:
$\sqrt{20}$
Option D:
$\sqrt{53}$
Jamb Maths Solution:
$\begin{align} & D=\sqrt{{{({{x}_{2}}-{{x}_{1}})}^{2}}+{{({{y}_{2}}-{{y}_{1}})}^{2}}} \\ & D=\sqrt{{{\left[ -3-(-1) \right]}^{2}}+{{\left[ -5-(-6) \right]}^{2}}} \\ & D=\sqrt{{{(-2)}^{2}}+{{1}^{2}}}=\sqrt{5} \\\end{align}$
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