Multiple choice

Given a circle with centre $O$. A chord $AB$ is drawn and $C$ is its midpoint. Then $\angle ACO$ will be _____.

  1. More than $90^o$
  2. Less than $90^o$
  3. $90^o$

  4. None of these
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C Correct answer
Explanation

The line segment from the center to the midpoint of a chord is always perpendicular to the chord. Therefore, the angle ACO is 90 degrees.

AI explanation

The line drawn from the center of a circle to the midpoint of a chord is always perpendicular to the chord. Therefore, the angle ACO formed is exactly 90 degrees.

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