Answer: i'm sure its c please give me brainlest!
Answer:
- 
Step-by-step explanation:
Given
← cancel sec x on numerator/ denominator
= 
= - 
Answer:
-1,2
Step-by-step explanation:
By looking up formulas on how to solve questions involving circles, and input numbers, such as pi, circumference, radius, and diameter of a circle, thank you