Fil'ld points On the CUWB y =1 COS EX that have a horizontal tangent.

Find points on the curve y = 1 cos x that nave a horizontal tangent Select the correct answer below and, it necessary, till in the answer box(es) to complete your choice. o o o C. There are a finite number of points that nave a horizontal tangent line. The point(s) islare (Type an ordered pair. use a comma to separate answers as needed. Type an exact answer using It as needed.) There are an infinite number of points that nave a horizontal tangent line. These points nave the form(s) tor any integer k. (Type an ordered pair. use a comma to separate answers as needed. Type an exact answer using It as needed.) There are no points that nave a horizontal tangent line.