SOLUTION: Express as a product sin4b+4cosb*cos8b*sinb I know formulas but not how to apply

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Question 1126038: Express as a product
sin4b+4cosb*cos8b*sinb
I know formulas but not how to apply
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
Express as a product
sin4b+4cosb*cos8b*sinb
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Is it sin(4b) ?
Or sin^4(b) ?