Convert the angles to degrees. Remember there are 2pi radians in a circle, and a circle has 360 degrees, so conversion factor is 180degrees/pi. Then you can easily approximate the reference angle. Remember you make the reference angle from the positive x-axis and the reference angle will be the angle between the terminal side and the nearest x-axis (either positive side or negative side of the x-axis).
1)

2)
Answer:
b= 12
Step-by-step explanation:
3/b = 5/20
3/b = 1/4
b= 12
Answer:
A: 1/26
B: 1/50
Step-by-step explanation:
used a calc
Answer:
w = 15
Step-by-step explanation:
5
x ___w___ = 3 x 5
5
w = 15
Answer:
no clue
Step-by-step explanation:
i would help u if I new what it was