cosines
زبان مبدأ: انگلیسی
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- واژهنامه · Merriam-Webster Collegiate Dictionary co·sine n. Pronunciation: ' kō- ˌ sīn Function: noun Etymology: New Latin cosinus, from co- + Medieval Latin sinus sine Date: 1635 1 : a trigonometric function that for an acute angle is the ratio between the leg adjacent to the angle when it is considered part of a right triangle and the hypotenuse 2 : a trigonometric function cos θ that for all real numbers θ is given by the sum of the alternating series cos θ = 1 - (θ 2 /2!) + (θ 4 /4!) - (θ 6 /6!) + ( θ 8 /8!) - ⋯ and that is exactly equal to the cosine of an angle of measure θ in radians]]> direction cosine Function: noun Date: circa 1889 : any of the cosines of the three angles between a directed line in space and the positive direction of the axes of a rectangular Cartesian coordinate system ― usually used in plural]]>