The distance of a point P(a,b,c) from X-axis is :

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Solution

Q.
The distance of a point $P (a, b, c)$ from X-axis is :

1 $\sqrt{a^{2} + c^{2}}$

2 $\sqrt{a^{2} + b^{2}}$

3 $\sqrt{b^{2} + c^{2}}$

4 $b^{2} + c^{2}$

Ans.
(3)

Ans. $\sqrt{b^{2} + c^{2}}$

Explanation:

The required distance is the distance of $P (a, b, c)$ from $Q (a, 0, 0)$ , which is $\sqrt{b^{2} + c^{2}} .$

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