Question

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

• A. More than ${90}^o$
• B. Less than ${90}^o$
• C. ${90}^o$
• D. None of these

Answer 1

The correct option is C ${90}^o$

$\angle ACO=90$${}^{\circ }$

$\because$ Line drawn from centre to the midpoint of the chord of the circle is perpendicular to the chord.