In a circle with centre O, AB and CD are two diameters perpendicular to each other. The length of chord AC is(a) 2AB(b) 2(c) 12AB(d) 12AB

In a circle with centre O, AB and CD are two diameters perpendicular t

1.	In a circle with centre O, AB and CD are two diameters perpendicular to each other. The length of chord AC is(a) 2AB(b) 2(c) 12AB(d) 12AB
Answer» In a circle with centre O, AB and CD are two diameters perpendicular to each other. The length of chord AC is (a) 2AB (b) $\sqrt{2}$ (c) $\frac{1}{2} A B$ (d) $\frac{1}{\sqrt{2}} A B$