Question

What are the x-intercepts of the graph of `y = cos x`?

Answer 1

The x-intercepts are locations on the coordinate plane where the y-value of the ordered pair is 0.

The cosine function evaluates to 0 at the following values ...

`pi/2, (3pi)/2, (5pi)/2, (7pi)/2 ...`

`((npi)/2,0)` where `n` is odd integer.