ECAT Maths XI : Chapter 14 INVERSE TRIGONOMETRIC FUNCTION & EQUATION (test 1) Leave a Comment / By Afshan JAMAL / July 2, 2026 Welcome to your ECAT Maths XI : Chapter 14 INVERSE TRIGONOMETRIC FUNCTION & EQUATION (test 1) If 4 sin⁻¹(x) + cos⁻¹(x) = π, then x is equal to: −1/2 0 1/2 1 None None Previous Start Quiz Next Time's up
