In a circle, AB and CD are two diameters that are perpendicular to each other. Find the length of the chord AC?
Answer & explanation
Correct answer: option 1
Let, CO = OA = r
AC = r\(\sqrt {2}\)
AC = \(\frac{CD}{2}\) × \(\sqrt {2}\) (CD = 2r)
AC = \(\frac{CD}{\sqrt {2}}\)