Find the exact value of [tex]sin(\frac{3\pi}{8}[/tex]

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anonmeans
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Find the exact value of [tex]sin(\frac{3\pi}{8}[/tex]

Postby anonmeans » Fri Mar 06, 2009 5:36 pm

Find the exact value of

Since , can I use the half angle formula?



Do i use the "+" because of being in Q!?

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stapel_eliz
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Postby stapel_eliz » Fri Mar 06, 2009 7:58 pm

anonmeans wrote:Find the exact value of

Since , can I use the half angle formula?

Yes, that would be the way to go. And yes, use the positive square root! :D


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