Missing Trig Functions on iOS?

I am taking practice quizzes and exams and I cannot find csc, sec, or cot. sin, cos, and tangent all appear on a slide bar, but not the reciprocals. I ended up getting secant for an answer. I couldn’t find it, so I used 1/cos (that’s the same), but the system said my answer was incorrect. Am I missing something or is there another way to do this?