Answer:
It's actually A
Step-by-step explanation:
is an angle in the third quadrant
To find the reference angle subtract π from it
reference angle = - π =
C
20
3*12=36-13=20
To make a perfect square, we must know that 22/2 = 11. In this case:
(x + 11)^2 = x^2 + 22x + 121