3 ms·

there is also sincos(), which is useful when you need both, such as building matrices. https://man7.org/linux/man-pages/man3/sincos.3.html https://man7.org/lin

• eigenket 6y ago
  Thats quite cute. I imagine it is (doing something equivalent to) using the complex exponential and taking the real an imaginary parts? exp(iz) = cos(z) + i sin(z), so by working out exp you can get cos and sin for free.