Q. 2cos[(C+D)/2]sin[(C-D)/2] किसके बराबर है?

(A) sinC + sinD
(B) sinC – sinD
(C) cosC – cosD
(D) cosC + cosD

✅ Correct Answer: (B) sinC – sinD

Published by Harikesh ⭐ 8.04K Points at 03-Aug-2021 08:42 am in Math

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