CBSE BoardEnglish MediumSTD 11 ScienceMathsStraight Lines1 Mark
MCQ
What is the distance of $(5, 12)$ from origin?
A
$6$ units.
B
$8$ units.
C
$10$ units.
✓
$13$ units.
✓
Answer
Correct option: D.
$13$ units.
We know, distance between two points $(x_1, y_1)$ and $(x_2, y_2)$ is $\sqrt{({\text{x}}_{1}-{\text{x}}_{2})^{2}+({\text{y}}_{1}-{\text{y}}_{2})^{2}}$
So, distance between $(5, 12)$ from origin $(0, 0)$ is
$\sqrt{({5-0})^{2}+({12-0})^{2}}$
$= \sqrt{({5})^{2}+({12})^{2}}$
$=13\text{ unit}.$
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