# C Programming: Mathematical Functions

Functions | Meaning |

Trigonometric | |

acos(x) | Arc cosine of x |

asin(x) | Arc sine of x |

atan(x) | Arc tangent of x |

atan 2(x,y) | Arc tangent of x/y |

cos(x) | Cosine of x |

sin(x) | Sine of x |

tan(x) | Tangent of x |

Hyperbolic | |

cosh(x) | Hyperbolic cosine of x |

sinh(x) | Hyperbolic sine of x |

tanh(x) | Hyperbolic tangent of x |

Other Functions | |

ceil(x’) | x rounded up to nearest integer |

exp(x) | e to the power x (e^x) |

fabs(x) | Absolute value of x |

floor(x) | x rounded down to the nearest interger |

fmod(x,y) | Remainder of x/y |

log(x) | Natural log of x, x>0 |

log10(x) | Base 10 log of x, x>0 |

pow(x,y) | x to the power y |

sqrt(x) | Square of x, x>=0 |

Remember this: To use Math functions in C program, you mush include header file #include<math.h>

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