Question

Find the measure of CD. Round to the nearest tenth.​

Answer 1

Hi, I explained it here. Hope this helps :)

Answer 2

Answer:

Therefore, mCD = 113.6°

Step-by-step explanation:

In the given triangle angle formed of the center will be defined by

$sinx=\frac{\frac{(36.7)}{2}}{21.8}$

$sinx=\frac{18.35}{21.8}$ = 0.8417

x = $sin^{-1}$(0.842)

= 57.32°

Now angle formed at the center by CD will be = 2x ( 57.32 )

                                                                            = 114.64°

Therefore, mCD = 113.6°