Question

1. O is the centre of a circle, AB is a chord and AT is the tangent at A. If

<AOB=100°. Then find <OAB and <OBA.​

Answer 1

Answer:

<OAB + <OBA + <AOB =180 ---(1)

(triangle sum property)

since OA=OB ( Radius of circle)

<OAB = <OBA

From equation 1

we get <OAB = <OBA=40°