Q50. Which of the following trigonometric identities is true?I. sin(a + b) = sin(a)cos(b) + cos(a)sin(b)II. tan(a - b) = (tan(a) - tan(b)) / (1 - tan(a)tan(b))III. cos(a - b) = cos(a)cos(b) - sin(a)sin(b)Mathematics — FAST Mock 2 — Question 50 of 120A. I onlyB. II & III onlyC. I and II onlyD. II onlyPractice more Mathematics MCQs for entrance exam preparation on Examora.io.← Previous Question Next Question →