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Math Help - tan(pi/12)

  1. #1
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    tan(pi/12)

    How do I find the answer to tan(pi/12)? I wouldn't be surprised if this was something really simple that just slipped by me...
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  2. #2
    Eater of Worlds
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    Try the identity:

    tan(\frac{u}{2})=\frac{1-cos(u)}{sin(u)}=\frac{sin(u)}{1+cos(u)}

    Where u=\frac{\pi}{6}
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  3. #3
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    \frac{\pi }{3} - \frac{\pi }{4} = \frac{\pi }{{12}}
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  4. #4
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    thanks! that helped a lot! ;D
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