Question

Answer as many as u can
Please

Answer 1

As AOB is a straight line sum of angles is equal to to 180 degree.

therefore

x+65+2x-20=180

3x+45=180

3x=135

x=45

Angle AOC = 45 degree

Angle BOC = 2x-20

Putting the value of x calculated above

Angle BOC= 2*45-20

Angle BOC= 90-20

Angle BOC 70 degrees