hi ,im struggling with this question,all help greatly appreciated

this is the proof question ..

sin(A+B) / sin(A-B) = (tanA + tanB) / (tanA - tanB )

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- November 21st 2009, 06:32 AMmike--1988proof (compound angles) trig identities
hi ,im struggling with this question,all help greatly appreciated

this is the proof question ..

sin(A+B) / sin(A-B) = (tanA + tanB) / (tanA - tanB ) - November 21st 2009, 07:00 AMGrandad