First slide

Introduction to 3-D Geometry

Question

From which of the following the distance of the point (1,2,3) is $\sqrt{10}$ ?

Moderate

A

origin
B

x-axis
C

y-axis
D

z-axis

Solution

Distance from origin $= \sqrt{1 + 4 + 9} = \sqrt{14}$
and distance from y-axis $= \sqrt{1 + 9} = \sqrt{10}$

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