7 cos (5x) + 9 = 12

Choose all answers that apply:
-115.38 +n⋅360 ∘

-16.48+n⋅180 ∘


-12.92 +n⋅72 ∘

12.92 +n⋅72 ∘



16.48+n⋅180 ∘


115.38 +n⋅360