# Cos150

Input |
---|

cos(150°) |

Exact result |

-sqrt(3)/2 |

Decimal approximation |

-0.86602540378443864676372317075293618347140262690519031402… |

Reference triangle for angle 150° |

width | cos(150 °) = -sqrt(3)/2~~-0.866025 height | sin(150 °) = 1/2 = 0.5 |

Continued fraction |

– [0; 1, 6, 2^_] |