Question

Point C is the center of the circle. What is the measure of angle ACB if the measure of arc ADB is 312 degrees ?

Answer 1

Given: Point C is the center of circle.

To Find: ∠ A CB

Solution: Measure of arc A DB=312°

Angle made by complete circle=360°

⇒∠A DB + ∠ AC B= 360°[Total measure of complete circle]

⇒ 312° + ∠ AC B= 360°

⇒∠ AC B = 360° - 312°

⇒ ∠ AC B=48°