Question

Find the distance of the point $(6,-8)$ from the origin.

Answer 1

Distance of $(6,-8)$ from $(0,0)$ is given by,

$D=\sqrt{{(x_2-x_1)}^2+{(y_2-y_1)}^2}$

$=\sqrt{(6-0{)}^2+(-8-0{)}^2}=\sqrt{36+64}$

$=\sqrt{100}$

$\therefore D=10$