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# Chapter 8 Trig

### Unit 2 Geometry Chapter 8 Trigonometry

Question | Answer |
---|---|

Angle of Depression | The angle formed by a horizontal line and a line of sight to a point below. |

Angle of Elevation | The angle of formed by a horizontal line and a line of sight to a point above. |

Component Form | The form of a vector that lists the vertical and horizontal change from the initial point to the terminal point. |

Cosine | The ratio of the length of the leg adjacent to an angle to the length of the hypotenuse in a right triangle. |

Direction | The angle made by a vector with a horizontal line, measured counterclockwise from the positive x-axis. |

Equal Vectors | Two vectors that have the same magnitude and the same direction. |

Geometric Mean | For positive numbers a and b, the positive number x such that a/x = x/b. |

Magnitude | The length of a vector. |

Parallel Vectors | Vectors with the same or opposite direction. |

Resultant Vector | The vector that represents the sum of two given vectors. |

Sine | The ratio of the length of the leg opposite an angle to the length of the hypotenuse in a right triangle. |

Tangent | The ratio of the length of the leg opposite an angle to the length of the leg adjacent to an angle in a right triangle. |

Trigonometric Ratio | A ratio of two sides of a right triangle. |

Vector | A quantity that has both magnitude and direction. |

Created by:
rgilpatric