## Topic: MATHS

Date: | 1600-1700 |

Language: | Modern Latin |

Origin: | cosinus, from co- + Medieval Latin sinus ( SINE) |

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co‧sine [countable] technical

HM the measurement of an acute angle in a triangle with a right angle, that is calculated by dividing the length of the side next to it by the length of the hypotenuse [↪ sine]