Question

The chord AB substends an angle 130 degree at the centr O. The radius of the circle is 8 cm. Find the length of AB. ​

Answer 1

Answer:

Take any point D on the circumference and join AD and DC . ∴ ∠AOC = 2 × ∠ADC ⇒ ∠ ADC = 1/2 × ∠AOC = 1/2 × 130° = 65° Now ...