Q50. Which of the following expressions is equivalent to cos(a) - cos(b)?Mathematics — NUST Mock 7 — Question 50 of 200A. 2cos((a+b)/2)cos((a-b)/2)B. 2sin((a+b)/2)cos((a-b)/2)C. 2sin((a+b)/2)sin((a-b)/2)D. -2sin((a+b)/2)sin((a-b)/2)Practice more Mathematics MCQs for entrance exam preparation on Examora.io.← Previous Question Next Question →