The angle subbtended at the centre of a circle by arc of the circle measures 128.5°. Find the angle subtended at the circumferecne of the circle by the same arc.
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. 64.25°.
The angle subtended by the arc at the circumference of the circle is half the measure of the angle subtended by the same arc ath the center of the circle.
According to the given question,
The angle subtended at the circumferecne of the circle = 128.5°/2
⇒ 64.25°