Question

angle OAB =_____=angle OAB​

Answer 1

Answer:

We know that,

angle sum property of a triangle=180degree

let the first side be OAB

Second side be OBA

and Third side be AOB

given,OAB=60

OBA=AOB[angel opp.to each other]–(1)

Therefore,OAB+OBA+AOB=180

60+(OBA+OBA)=180 –from(1)

2OBA=180-60

OBA=120/2=60.

Since OBA=AOB=60 degree