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Math Help - Trigonometry question

  1. #1
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    Trigonometry question

    HI,
    I WOULD APPRECIATE YOUR HELP WITH THE FOLLOWING QUESTION PLEASE.

    QUESTION: Without using a calculator or maths tables, show that

    Sin^2 \frac{\pi}{6} + Sin^2\frac{\pi}{4} + Sin^2\frac{\pi}{3} = \frac{3}{2}

    Thank you.
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  2. #2
    MHF Contributor

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    Re: Trigonometry question

    Quote Originally Posted by Seaniboy View Post
    QUESTION: Without using a calculator or maths tables, show that

    Sin^2 \frac{\pi}{6} + Sin^2\frac{\pi}{4} + Sin^2\frac{\pi}{3} = \frac{3}{2}
    You are expected to know that:
    \sin\left(\frac{\pi}{6}\right)=\frac {1}{2},~\sin\left( \frac {\pi}{4}\right)=\frac{\sqrt2}{2},~\&~\sin\left( \frac {\pi}{3}\right)= \frac {\sqrt3}{2}
    Thanks from MarkFL and topsquark
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  3. #3
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    Re: Trigonometry question

    Thanks, Plato.
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  4. #4
    Forum Admin topsquark's Avatar
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    Re: Trigonometry question

    Quote Originally Posted by Seaniboy View Post
    HI,
    I WOULD APPRECIATE YOUR HELP WITH THE FOLLOWING QUESTION PLEASE.

    QUESTION:
    Can you repeat that? I can't hear you...speak up!

    -Dan
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