**J Barron** BA, MA (Cantab)University of Cambridge

# 1.2 Engineering Mathematics,Formulas and Calculations

## 1.2.1 Mathematical Signs and SymbolsCalculations

Sign, symbol | Quantity |

lb x; log2 x | binary logarithm of x |

sin x | sine of x |

cos x | cosine of x |

tan x;tg x | tangent of x |

cot x; ctg x | cotangent of x |

sec x | secant of x |

cosec x | cosecant of x |

arcsin x, etc. | arc sine of x, etc. |

sinh x, etc. | hyperbolic sine of x, etc. |

arsinh x, etc. | inverse hyperbolic sine of x, etc. |

i, j | imaginary unity, i^{2} = −1 |

Re z | real part of z |

Im z | imaginary part of z |

Get *Broadcast Engineer's Reference Book* now with O’Reilly online learning.

O’Reilly members experience live online training, plus books, videos, and digital content from 200+ publishers.