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Consider a circle with centre at origin and radius $2\sqrt{2}$. A square is inscribed in the circle whose sides are parallel to the $X$ an $Y$ axes. The coordinates of one of the vertices of this square are

  1. $(2, -2)$
  2. $(2\sqrt{2},-2)$
  3. $(-2, 2\sqrt{2})$
  4. $(2\sqrt{2}, -2\sqrt{2})$
in Numerical Ability by Veteran (425k points)
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Is $A$ the answer??
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Its a duplicate question, has been asked 2 times already.

1 Answer

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Answer $A$

Let radius of the circle be $r$, then:$$ r = 2\sqrt2$$

Draw perpendiculars from this point to $x$ and $y$ axes respectively and let them be $a$ and $b$.

Now,

$$a^2 + b^2  = r^2 \implies 2a^2 = r^2 \;\because (a = b)$$

$$\implies 2a^2 = (2\sqrt2)^2 = 4 \times 2 \implies a = \pm2$$

So, the coordinates are $(2, -2)$

$\therefore A$ is the correct option.
by Boss (13.7k points)

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