sin( x ) 4. Which of the following is an x-intercept (zero) for the function: f (x) = 1-2 cos(x) Hint: Plug in each value to check if the function produces zero. A fraction is equal to zero if the top equals zero while the bottom is not zero. A) X = - 6 B) x=27 C) 3 TT 2 D X= 3 E X= F) None of these