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anonymous
 one year ago
Find the exact value by using a halfangle identity.
\[\tan \left( \frac{ 7\pi }{8 } \right)\]
anonymous
 one year ago
Find the exact value by using a halfangle identity. \[\tan \left( \frac{ 7\pi }{8 } \right)\]

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0dw:1438036308621:dw

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I'm kinda lost with solving it.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Hang on, I will put my work.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0\[\tan \frac{ \frac{ 7\pi }{ 4 } }{ 2 }=\frac{ 1\cos \frac{ 7\pi }{ 4 } }{ \sin \frac{ 7\pi }{ 4 } }\]

welshfella
 one year ago
Best ResponseYou've already chosen the best response.0you can use tan (x /2) = sin x / (1 = cos x)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0\[=\frac{ 1\frac{ \sqrt{2} }{ 2 } }{ \frac{ \sqrt{2} }{ 2 } }\]

Loser66
 one year ago
Best ResponseYou've already chosen the best response.1simplify more to get 1sqrt2

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Is the numerator already simplified? Or can I use 2/2 instead of 1?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Ohhhh! Thank you! Now I get it. :)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0The answer is: \[1\sqrt{2}\] right?
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