The angle subtended by an arc at the circumference of the circle is 55°. Find the angle subtended by it at the centre.
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. 110°.
The angle subtended by an arc at the centre of a circle is twice the angle it subtends at the circumference.
Given: Angle at circumference = 55°
So, angle at centre = 2 × 55° = 110°