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trigonometric function noun

  • (trigonometry) Any function of an angle expressible as the ratio of two of the sides of a right triangle that has that angle (e.g., sine), or that subtracts 1 from such a ratio or subtracts such a ratio from 1 (e.g., coversed sine).
 тригонометри́ческая фу́нкция
inverse trigonometric function
обра́тная тригонометри́ческая фу́нкция
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