C-08-Q216mediumsingle_mcq

To draw two tangents from an external point such that the angle between them is $60^{\circ}$ , the corresponding $\angle AOB$ at the centre will be—

a $30^{\circ}$
b $60^{\circ}$
c

ব্যাখ্যা

In the quadrilateral formed by the centre, the external point, and the two points of contact, the radii are perpendicular to the tangents. So the central angle and the angle between the tangents are supplementary: $\angle AOB = 180^{\circ} - 60^{\circ} = 120^{\circ}$ .

To draw two tangents from an external point such that the angle between them is 60∘60^{\circ}60∘, the corresponding ∠AOB\angle AOB∠AOB at the centre will be—

ব্যাখ্যা

এই অধ্যায়ের আরও প্রশ্ন

To draw two tangents from an external point such that the angle between them is $60^{\circ}$ , the corresponding $\angle AOB$ at the centre will be—