# Cos sqrt 2/2

Input |
---|

cos(sqrt(2/2)) |

Exact result |

cos(1) |

Decimal approximation |

0.540302305868139717400936607442976603732310420617922227670… |

Property |

cos(1) is a transcendental number |

Reference triangle for angle 1 radian |

width | cos(1)~~0.540302 height | sin(1)~~0.841471 |

Alternate form |

e^(-i)/2 + e^i/2 |

Continued fraction |

[0; 1, 1, 5, 1, 2, 2, 1, 2, 1, 1, 40, 4, 3, 1, 3, 4, 46, 3, 5, 2, 12, 3, 1, 4, 11, 1, 3, 3, 10, …] |