Question

If angle DAC=31 degrees and angle CAB=27 degrees, what is the measure of arc BD? (I will upload an image of the problem)

Answer 1

Angle DAB is 58Degrees. then DTB would be 2*DAB.
Now we know the angle it make with the arc. \[\frac{ 2*58 }{ 360 } * 2\pi r\]

Answer 2

Length of arc is \[\frac{ \theta }{ 360 }*2*pi *r\] where THETA is the angle made by the arc with the centre