Answer:

Step-by-step explanation:
The reference angle is the angle that the given angle makes with the x-axis.
For an ordered pair to share the same reference angle, the x and y coordinates must be the same or a factor of each other.
From the given options:

We observe that only the pair in option C has the same x and y coordinate with the second set of points being a negative factor of the first term. Therefore, they have the same reference angle.
Answer:
wait what
Step-by-step explanation: yeas i know you might me bored im dying of boredness
Answer:
<u>radius: 8.4</u> <u>Area: 221.5</u>
Step-by-step explanation:
16.8 <em>divided </em>by 2 = 8.4
The Formula for finding the area of circle= R₂ (radius squared: radius times itself) Multiplied by pi. pi = 3.14
8.4₂ multiplied by 3.14