2.) which of the following functions have graphs that oscillate? select all that apple (2 points)

a.) y = sin θ
b.) y = cos θ
c.) y = tan θ
d.) y = sec θ
e.) y = csc θ
f.) y = cot θ

4.) which of the following have a vertical asymptote for values of θ such that cos θ = 1? select all that apply. (2 points)

a.) y = sin θ
b.) y = cos θ
c.) y = tan θ
d.) y = sec θ
e.) y = csc θ
f.) y = cot θ

update! i finally figured it out; here are the answers to it all.

1.) c
2.) a and b
3.) c
4.) c and d