Re: sin 4(pi)=-2e-13 and not 0?
[Prev][Next][Index][Thread]
Re: sin 4(pi)=-2e-13 and not 0?
>If you look at that number, you would see that it is very small...
>like -0.0000000000002.
>It's just that the TI couldn't quite figure out that that's supposed
>to be zero...
If you go over 14 places, you'll find the calc is a digit or 2 off for
almost every value- that's why it says they're _approximations_ (There
are formulas to calculate angles using only the special angles of 30, 45,
60, & 90, and any other values you find from those.)
References: