Periodic Functions, Radians, and the Unit Circle

• $90\degree$

• $170\degree$

• $190\degree$

• $255\degree$

• Amplitude is 1
  Midline is $y=2$

• Amplitude is 2
  Midline is $y=2$

• Amplitude is 2
  Midline is $y=1$

• Amplitude is 1
  Midline is $y=1$

• -1

• 2

• -3

• 8

• $\sin\ 150\degree=\frac{\sqrt{3}}{2}\ ;\ \cos\ 150\degree\ =\ \frac{1}{2}$

• $\sin\ 150\degree=-\frac{\sqrt{3}}{2}\ ;\ \cos\ 150\degree\ =\ -\frac{1}{2}$

• $\sin\ 150\degree=\frac{1}{2}\ ;\ \cos\ 150\degree\ =\ \frac{\sqrt{3}}{2}$

• $\sin\ 150\degree=\frac{1}{2}\ ;\ \cos\ 150\degree\ =-\frac{\sqrt{3}}{2}$

• $491\degree$

• $-229\degree$

• $131\degree$

• $49\degree$

• 4

• 2

• -0.75

• 0.25

• $\frac{1}{2}$

• $\frac{\sqrt{3}}{2}$

• $\frac{\sqrt{2}}{2}$

• $-\frac{\sqrt{2}}{2}$

• $225\degree$

• $45\degree$

• $135\degree$

• $315\degree$

• $148\degree$

• $212\degree$

• $122\degree$

• $32\degree$

• $-\frac{\sqrt{3}}{2}$

• $-\frac{1}{2}$

• $0$

• $-1$