Recent content by DCircuit

They can't use the trig functions to get the trig functions. I guess the only way to evaluate complex exponents is with the Taylor's power series, which will only give you a decimal approximation depending on how far you want to go.

41.3° = 41.3pi/180 That is easy. sinx\ =\ \frac{1}{2i}\left(e^{ix}\ -\ e^{-ix}\right)

Actually, Euler's Formula gives the exact values of the Trig functions and is very easy to use. e^ix = cos(x) + isin(x)

How can you find, say, sin(41.3°) without using a calculator? Or maybe a better question is: How does a calculator find that value when you punch it in? Also, what about arcsin, arccos, etc... How does a calculator find those values?