Question
Find the reference angle θ'.
θ= -7pi/9
θ= -7pi/9
Answers
Steve
-7pi/9 + 2pi = 11pi/9
This is in QII, so we need to subtract it from pi:
pi - 11pi/9 = 7pi/9
You can also subtract 2pi if the angle is large and positive.
This is in QII, so we need to subtract it from pi:
pi - 11pi/9 = 7pi/9
You can also subtract 2pi if the angle is large and positive.
Steve
Oops. 11pi/9 > pi, so subtract pi to get
2pi/9
play around adding and subtracting 2pi or pi till you get an angle in QI.
2pi/9
play around adding and subtracting 2pi or pi till you get an angle in QI.