1. sin(A+B) - sin(A-B) is equal to





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  • By: anil on 05 May 2019 02.11 am
    Expression : sin(A+B) - sin(A-B) = $$(sin Acos B + cos Asin B) - (sin Acos B - cos Asin B)$$ = $$cos Asin B + cos Asin B = 2cos Asin B$$ => Ans - (C)
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