Angle subtended by a chord on the centre of a circle is 180 degree. What will be the angle subtended by the same chord on the circumference of this circle?
Answer & explanation
Correct answer: option 3
We know that ,
Angle made by an chord at center is double to the angle made by same chord on the major arc.
Angle subtended by a chord on the centre of a circle is 180 degree.
That means chord is diameter of circle.
And we know that , Diameter makes 90º angle on circumference.
Let us consider that , Angle made at circumference = x degree
According to question ,
2x = 180º
x = 90º