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

# IrishMath Ch 13 Trig

### Chapter 13 Trig Flashcards

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

sin x | opp/hyp |

cos x | adj/hyp |

tan x | opp/adj |

hypotenuse | longest side of right triangle |

adjacent leg | leg that touches angle (helps form the angle) |

opposite leg | leg that is across from angle and doesn't help form angle |

sec x | hyp/adj |

csc x | hyp/opp |

cot x | adj/opp |

0 degrees = ____ radians | 0 degrees = 0 radians |

180 degrees = _____ radians | 180 degrees = Pi radians |

90 degrees = _____ radians | 90 degrees = Pi/2 radians |

270 degrees = _____ radians | 270 degrees = 3Pi/2 radians |

To convert from degrees to radians, multiply by: | Pi radians / 180 degrees |

To convert from radians to degrees, multiply by: | 180 degrees / Pi radians |

Arc Length of Sector of Circle | S = r theta (theta is in radians) |

Area of Sector of Circle | A = 1/2 r^2 theta (theta is in radians) |

On the x-y coordinate plane: sin A = | y/r |

On the x-y coordinate plane: cos A = | x/r |

On the x-y coordinate plane: tan A = | y/x |

Created by:
JenJo21