we know that #include <iostream> is a library used for cout and cin, can someone tell me which library is used to get "sine" and "cosine" functions

Answer 1

cmath VS math.h
http://www.cplusplus.com/forum/beginner/70599/

Answer 2

#include <math.h>

Answer 3

#include <cmath>

Answer 4

thanks guys

Answer 5

<math.h>