SOLUTION: complete the identities: (cos(alpha-beta))/((cos(alpha+beta)) (sin3x+sin9x)/(cos3x+cos9x)

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Question 1110346: complete the identities:
(cos(alpha-beta))/((cos(alpha+beta))
(sin3x+sin9x)/(cos3x+cos9x)

Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
complete the identities:
(cos(alpha-beta))/((cos(alpha+beta))
(sin3x+sin9x)/(cos3x+cos9x)
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It's not an identity without an equal sign.