Answer:
Therefore, mCD = 113.6°
Step-by-step explanation:
In the given triangle angle formed of the center will be defined by
[tex]sinx=\frac{\frac{(36.7)}{2}}{21.8}[/tex]
[tex]sinx=\frac{18.35}{21.8}[/tex] = 0.8417
x = [tex]sin^{-1}[/tex](0.842)
= 57.32°
Now angle formed at the center by CD will be = 2x ( 57.32 )
= 114.64°
Therefore, mCD = 113.6°
