Q14. Which of the following expressions is equivalent to sec-1(x)?Mathematics — NUST Mock 4 — Question 14 of 200A. sin-1(√(x2 - 1) / x)B. cos-1(√(x2 + 1))C. cot-1(1 / √(x2 + 1))D. csc-1(√(1 + x2))Practice more Mathematics MCQs for entrance exam preparation on Examora.io.← Previous Question Next Question →