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anonymous
 one year ago
Trigonometric expression help
(look in comments)
anonymous
 one year ago
Trigonometric expression help (look in comments)

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0\[\frac{ \tan 15 ° }{ 1  \tan^215 ° }\] I know there's a formula but the answer in the back of my textbook gives me the solution: dw:1443639097573:dw How do you get the 1/2 and then the nominator is 2tan 15 °?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0the formula for tangent in this case (where there is \[\tan 2\alpha \] ) is \[ \frac{ 2\tan \alpha }{ 1  \tan^2 \alpha }\]
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