what are the x-intercepts of this equation f(x)=1-cos(x)/(x)

Answer 1

To find the x intercepts set y equal to 0

so (1-cosx)/x=0

1-cosx=0

cosx=1

so where does cosine =1 that is at 0 and 2pi but 0!must be excluded since the function is undefined at 0. ( can’t divide by 0) answer is 2pi and all multiples of 2pi