Sec-1, SEC-1, sec-1, or may refer to:
* = = or
exsecant of ''x'', an old trigonometric function
* = , sometimes interpreted as or
arcsecant
In mathematics, the inverse trigonometric functions (occasionally also called arcus functions, antitrigonometric functions or cyclometric functions) are the inverse functions of the trigonometric functions (with suitably restricted domains). Spec ...
of ''y'', the compositional inverse of the trigonometric function secant (see below for ambiguity)
* = , sometimes interpreted as = = or
cosine of ''x'', the multiplicative inverse (or reciprocal) of the trigonometric function secant (see above for ambiguity)
* , sometimes interpreted as = , the
secant of the
multiplicative inverse (or reciprocal) of ''x'' (see below for ambiguity)
* , sometimes interpreted as = = or
cosine of ''x'', the multiplicative inverse (or reciprocal) of the trigonometric function secant (see above for ambiguity)
See also
*
Second (time)
*
Seconds of arc
A minute of arc, arcminute (arcmin), arc minute, or minute arc, denoted by the symbol , is a unit of angular measurement equal to of one degree. Since one degree is of a turn (or complete rotation), one minute of arc is of a turn. The n ...
, a unit for angle measurement
*
Inverse function
*
*
{{Letter-Number Combination Disambiguation