Q10. If a is an angle in a triangle, which of the following is equivalent to sin(a/2)?Mathematics — NUST Mock 7 — Question 10 of 200A. √((1 + cos a)/2)B. ±√((1 − cos a)/2)C. √((1 − cos a)/2)D. √((1 + cos a))Practice more Mathematics MCQs for entrance exam preparation on Examora.io.← Previous Question Next Question →