Question

In circle A below, points B, C, and D lie on the circle, and mZBDC = 35".

Answer 1

arcBC = 140degrees

Explanation:

From the given digaram;

Angle at the center is twice angle at the circumference

Hence;

m<CAB = 2(m<CDB)

m<CAB = 2 * 35

m<CAB = 70degrees

Also;

m<CAB = 1/2 arcBC

70 = 1/2arcBC

arcBC = 70*2

arcBC = 140degrees