Answer:
A and C.
Step-by-step explanation:
Graphs that have symmetry with respect to the y-axis are called even functions. So, let's check each of the graphs:
1. As we can see in the graph attached, y=cos(x) is symmetrical with respecto to the y-axis.
2. As we can see in the graph attached, y=sin(x) is not symmetrical with respecto to the y-axis.
3. As we can see in the graph attached, y=sec(x) is symmetrical with respecto to the y-axis.
4. As we can see in the graph attached, y=csc(x) is not symmetrical with respecto to the y-axis.
