Question

I need help finding the reference angles for these angles.

1) 1.4
2)
`-1.4 \pi`
3) 2.3
4)
`2.3 \pi`

Answer 1

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)
`1.4 * (180degrees)/(pi) = 80.214 degrees`
2)
`-1.4 \pi * (180degrees)/( \pi ) = -252 degrees`