Which of the following have a frequency factor of b = 1?
a sine function whose period is 2pi radians
a sine function whose x-coefficient is 2pi
a cosine function with no phase shift whose x-coefficient is 1
a sine function whose graph shows 2 cycles from - 4pi radians to 0
a sine function whose graph shows 2 cycles from 0 to 2pi radians
a cosine function whose graph shows 4 cycles from 0 to 4pi radians
a cosine function whose graph shows 1 cycle from 3 pi radians to 5 pi radians