Answer:
True
Step-by-step explanation:
Answer:
30 I think but I'm probably wrong
Answer:

Step-by-step explanation:
is an angle in the third quadrant
To find the reference angle subtract π from it
reference angle =
- π = 
5(r - 10) = -51
= 5r - 50 = -51
= 5r = -51 + 50
= 5r = -1
= r = -1/5
r = -0.2