Answer:
Explanation:
so you understand what to do, or what they want you to figure out.
AD is an "arc length" . So they want to know the length, in degrees. along the circle , from A to D. Why didn't they just say so, huh. :D well, they kinda did, but not as clear as they could have.
next. you need to know how far around a circle is all the way around?
if you guessed 360°, you are right
next because they gave us that angle of 93° we know all the angles around the point E, complimentary angles add to 180 so 180-93 = 87°. That's the to the left of 93 and directly below it too. This is the answer to the 2nd question ∠DEC= 87°
we can only write arc length of AD in respect to what we know about the circle.
so, arc length of AD is 161° + BA + AD + DC = 360
or getting AD by it self , then
AD =360 -161 -BA -DC
AD = 199°-BA-DC
maybe that's all you need to do, also i'm wondering if there is some more info about this problem , maybe at the top of the page? of off the screen?