# Trigonometry: Question Preview (ID: 14055)

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what is trigonometry? |
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a) The study of angles and of the angular relationships of planar and three-dimensional figures | b) cames from the Greek term trigōnon means"triangle measure" | c) the study of how the sides and angles of a triangle are related to each other. | d) all are correct | |

The trigonometric functions are most simply defined using the ___________. |
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a) triangles | b) unit circle | c) trigonometric functions | d) trigonometric functions | |

2 pi in revolution is _________ |
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a) 1 | b) 4 | c) 3 | d) 2 | |

sine is equals to__________ |
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a) opposite over adjacent | b) hypotenuse over adjacent | c) hypotenuse over opposite | d) opposite over hypotenuse | |

90 degrees is ________ in radian measure |
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a) pi | b) pi over two | c) 3 pi over two | d) 2 pi | |

which of the following is true about right triangles |
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a) oblique triangles are right triangles | b) the hypotenuse of the right triangle is the shortest side | c) any side of the right triangle can be solve using pythagorean theorem | d) all are wrong | |

what trigonometric identity you will use in this equation: tan(θ)cos(θ) = sin(θ) |
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a) pythagorean identity | b) quotient identity | c) reciprocal identity | d) sum to product | |

sin (B) is equals to____________ |
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a) 1/cos (B) | b) 1/csc (A) | c) tan (B) sin (B) | d) tan (B) cos (B) | |

what formula use in finding the area of triangle with all sides given |
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a) law of cosines | b) Heron's formula | c) 1/2 base x height | d) all are correct | |

in what quadrant is cosine is always positive |
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a) quadrant 1 | b) quadrant 2 | c) quadrant 1 and 2 | d) quadrant 1 and 4 | |

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