Re: really easy trig question


.. wrote:
> Hi All,
>
> I used to know this, but my brain has got rusty with age.
>
> Why is it that sin (Pi/3) = (root 3)/2 ?
>
> Thanks for your help
>
> Michael

Draw an equilateral triangle, and drop a perpendicular from the apex to
the base. Then a bit of Pythagoras and you should be done.

.

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