Q49. If cos θ = a, and 3π/2Mathematics — Trignometry — Question 49 of 479A. -a / (1 - a2)B. -√(1 - a2) / aC. a / √(1 - a2)D. √(1 - a2) / aPractice more Mathematics MCQs for entrance exam preparation on Examora.io.← Previous Question Next Question →