Sin(x+y)cos(x-y)= 1/2sin2x+ 1/2 sin2y Help

Sin(x+y)cos(x-y)= 1/2sin2x+ 1/2 sin2yHelp please I have no idea how to do this because my math class never did it but while
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2. asked by Dustin
3. 1,027 views
prove the identitysin2x-sin2y/sin2x+sin2y=tan(x-y)/tan(x+y)
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2. asked by liv
3. 1,820 views
proof that (sinx+sin3x-2sin2x)/(sinx+sin3x+2sin2x)=-tan(x/2)
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2. asked by thato
3. 537 views
Prove that: (sinx-2sin2x+sin3x)/(sinx+2sin2x+sin3x)= -tan^2 x/2.
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2. asked by Mahlatse
3. 785 views
Sin2x+sin2y=2sin(x+y)cos(x-y)
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2. 83 views
tanx=1/1,tany=1/3 then cos2x=sin2y
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2. asked by gopi
3. 453 views
pls. help:prove the identity sin2x+sin2y=2sin(x+y)cos(x-y)
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2. asked by justme
3. 4,442 views
sin2x+sin2y=2sin(x+y)cos(x-y)Please helpp mee!! thank you sooo much really!!
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2. asked by Sabrina
3. 477 views
A=cos2x+isin2x ,B=cos2y+sin2y hence prove that A-B/A+B=itan(x+y).
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2. asked by Saloni
3. 631 views
How do I verify this identity? (I've tried a lot but it's just not working)(sin2x + sin2y) = 2sin(x+y)cos(x-y)
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2. asked by Zack
3. 559 views