Grade 12th passTrigonometry
SIN(A)+SIN(B)=31/2(COS(B)-COS(A)) THEN FINDSIN(3A)+SIN(3B)=??
SIN(A)+SIN(B)=31/2(COS(B)-COS(A)) THEN FIND
SIN(3A)+SIN(3B)=??
1 Answer
PK NAIN
Approved Tutor Answer10 Years agoapply sinc +sind formula and cosc-cosd then divide these two terms leaving only 31/2 on one side then cancel the terms and you get answer
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