SOLUTION: verify ((tan(x+y)-tany)/(1 +tan(x+y)tany))=tanx
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Question 969675: verify ((tan(x+y)-tany)/(1 +tan(x+y)tany))=tanx
Answer by lwsshak3(11628) (Show Source): You can put this solution on YOUR website!
verify ((tan(x+y)-tany)/(1 +tan(x+y)tany))=tanx
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start with left side:
verified: left side=right side
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