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## Secant function (sec)

The abbreviation is sec sec(θ) = hypotenuse / adjacent It is not commonly used, and is equal to 1/cosine

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## Sec, Cosec and Cot – Mathematics A-Level Revision

Secant (sec) - Trigonometry function (See also Secant of a circle). In a right triangle, the secant of an angle is the length of the hypotenuse divided by the length of the adjacent side. In a formula, it is abbreviated to just 'sec'. Of the six
What is a second (s or sec)?

Secant, cosecant and cotangent, almost always written as sec, cosec and cot are trigonometric functions like sin, cos and tan. sec x = 1 cos x cosec x = 1 sin x cot x = 1 = cos x tan x sin x Note, sec x is not the same as cos -1 x (sometimes

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## Secant Function

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