1. The problem statement, all variables and given/known data Lim (x,y) --> (pi, 0) of (cos(x-y))/(cos(x+y)) 2. Relevant equations The answer is 1 3. The attempt at a solution My answer is this: The function is continuous at the point in question, so we only need to plug in the values which result to be 1. My question here: I know this function is discontinuous when cos = pi/2 or 3pi/2. As the denominator would be 0. But because my point of interest IS continuous, this allows me to proceed in the manner that I did. Correct?