1.

The distance of points P(x, y) from origin O (0, 0) isA) \(\sqrt{x+y}\)B) \(\sqrt{x^2+y^2}\)C) x2 + y2D) x + y

Answer»

Correct option is (B) \(\sqrt{x^2+y^2}\)

The distance between two points \((x_1,y_1)\;\&\;(x_2,y_2)\) is given by \(d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}\)

\(\therefore\) Distance of point P(x, y) from origin O(0, 0) is

\(d=\sqrt{(0-x)^2+(0-y)^2}\)

\(=\sqrt{(-x)^2+(-y)^2}\)

\(=\sqrt{x^2+y^2}\)

Correct option is B) \(\sqrt{x^2+y^2}\)



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