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The length of the adjacent side divided by the length of the hypotenuse.
Cosine definition math. Mathematics a trigonometric function that in a right angled triangle is the ratio of the length of the adjacent side to that of the hypotenuse. The sine of the complement. In this way we can find the cosine of any q in the range 0 q 90. The cosine function along with sine and tangent is one of the three most common trigonometric functions.
Cosine is a trigonometric function and its abbreviation is cos. The cosine is equal to the length of the side adjacent to q divided by the length of the triangle s hypotenuse. In any right triangle the cosine of an angle is the length of the adjacent side a divided by the length of the hypotenuse h. ˈkəʊˌsaɪn of an angle n.
The abbreviation is cos cos θ adjacent hypotenuse.
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