Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

Normal Size Small Size show me how

Normal Size Small Size show me how

# Geometry Ch7

Term | Definition |
---|---|

Pythagorean triple | A set of three positive integers a, b, and c that satisfy the equation c2=a2+b2. |

Trigonometric ratio | A ratio of the lengths of two sides in a right triangle. |

Tangent | A trigonometric ratio, abbreviated as tan. For a right triangle ABC, the tangent of the acute angle A is tan A = length of leg opposite <A over length of leg adjacent to <A = BC over AC. |

Sine | A trigonometric ratio, abbreviated as sin. For a right triangle ABC, the sine of the acute angle A is |

Cosine | The trigonometric function that is equal to the ratio of the side adjacent to an acute angle (in a right-angled triangle) to the hypotenuse. |

Angle of elevation | When you look up at an object, the angle that your line of sight makes with a line drawn horizontally. |

Angle of depression | When you look down at an object, the angle that your line of sight makes with a line drawn horizontally |

Solve a right triangle | To find the measures of all of the sides and angles of a right triangle. |

Inverse tangent | An inverse trigonometric ratio, abbreviated as tan -1. For acute angle A, if tan A=x, then tan -1 x = m<A. |

Inverse sine | An inverse trigonometric ratio, abbreviated as sin -1. For acute angle A, if sin A=y, then sin -1 = m<A. |

Inverse cosine | An inverse trigonometric ratio, abbreviated as cos -1. For acute angle A, if cos A=z, then cos -1 = m<A. |

Created by:
Dludden03