Q42. Which of the following is equivalent to the expression sin(a + b)sin(a - b)?Mathematics — FAST Mock 5 — Question 42 of 120A. cos2(a) - cos2(b)B. cos2(b) - cos2(a)C. sin2(a) + sin2(b)D. sin2(b) - sin2(a)Practice more Mathematics MCQs for entrance exam preparation on Examora.io.← Previous Question Next Question →