Question

Find CAB and OAB...

Please do it fast​

Answer 1

Solution

ang(AOB)=2*ang(ACB)=2×40°=80°

now...OA=OB(radii of same circle)

therefore..<OAB=<OBA

therefore...

<OAB+<OBA+<AOB=180°

=><OAB+<OAB+80°=180°

=>2<OAB=100°

=><OAB=50°

Answer 2

Step-by-step explanation:

ang(AOB)=2*ang(ACB)=2×40°=80°

now...OA=OB. (radii of same circle)

therefore..<OAB=<OBA

therefore...

<OAB+<OBA+<AOB=180°

=><OAB+<OAB+80°=180°

=>2<OAB=100°

=><OAB=50°