Q81. Find the solution set for the equation cos(2x) + 2sec(2x) + 3 = 0 in the interval 0° ≤ x ≤ 360°.Mathematics — NUST Mock 7 — Question 81 of 200A. 90°, 180°B. 180°, 360°C. 90°, 270°D. 270°, 360°Practice more Mathematics MCQs for entrance exam preparation on Examora.io.← Previous Question Next Question →