cosinen.

Brit.

/ˈkəʊsʌɪn/, U.S.

/ˈkoʊˌsaɪn/

Etymology: modern < co- prefix 6 + sine n.² The Latin cosinus occurs in Gunther Canon Triangulorum (1620); French cosine.

Trigonometry.

The sine of the complement of a given angle. (Abbreviated cos.)

ΘΚΠ

the world > relative properties > number > geometry > [noun] > branches of > trigonometry > functions of

right sine1581

sine1593

secant1594

tangent1594

secans1599

cosine1635

cotangent1635

cosecant1706

sec.-

1635 J. Wells Sciographia 44 As the Radius Is to the cosine of the angle given.

1715 tr. D. Gregory Elements Astron. I. i. §68. 141 The Co-sine of the Angle.

1880 S. Haughton Six Lect. Physical Geogr. iii. 123 The mean annual evaporation..varies as the cosine of the latitude.

attributive.1881 Nature 15 Dec. 167/2 Integrators were of three kinds: (1) radius machines, (2) cosine machines, (3) tangent machines.

This entry has not yet been fully updated (first published 1893; most recently modified version published online March 2022).

单词	cosine
释义	cosinen. Brit. /ˈkəʊsʌɪn/, U.S. /ˈkoʊˌsaɪn/ Etymology: modern < co- prefix 6 + sine n.² The Latin cosinus occurs in Gunther Canon Triangulorum (1620); French cosine. Trigonometry. The sine of the complement of a given angle. (Abbreviated cos.) ΘΚΠ the world > relative properties > number > geometry > [noun] > branches of > trigonometry > functions of right sine1581 sine1593 secant1594 tangent1594 secans1599 cosine1635 cotangent1635 cosecant1706 sec.- 1635 J. Wells Sciographia 44 As the Radius Is to the cosine of the angle given. 1715 tr. D. Gregory Elements Astron. I. i. §68. 141 The Co-sine of the Angle. 1880 S. Haughton Six Lect. Physical Geogr. iii. 123 The mean annual evaporation..varies as the cosine of the latitude. attributive.1881 Nature 15 Dec. 167/2 Integrators were of three kinds: (1) radius machines, (2) cosine machines, (3) tangent machines. This entry has not yet been fully updated (first published 1893; most recently modified version published online March 2022). < n.1635
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