Question

find the value of x if angle abo is 25, angle aco is 30

Answer 1

We have OB=OA(radii of the same circle)

Therefore OAB is an issosceles triangle

Angle OBA =AngleOAB

In Triangle OAB

Angle OAB =20 degree

Similarly in triangle OAC

Angle OAC =30 degree

Total angle BAC =50 degree

We know, BAC =halfBOC

Therefore angle boc =100 degree

Hence founded

Answer 2

25+30=55 (angle substented at the circumference)
x= 55*2=110 ( double at the centre)