Category
page 1Trigonometric functions
trigonometric function
function of an angle
cosine
REDIRECT Sine and cosine
tangent
ratio of lengths of opposite side and the adjacent side of a right angled triangle; a trigonometric function
cotangent
REDIRECT Trigonometric functions
secant
ratio of the hypotenuse of a triangle to the adjacent side of an angle
cosecant
REDIRECT Trigonometric functions
versine
The versine or versed sine is a trigonometric function found in some of the earliest (Sanskrit Aryabhatiya,
Section I) trigonometric tables. The versine of an angle is 1 minus its cosine.
coversine
REDIRECT Versine#cvs

sine and cosine
trigonometric functions of an angle

exsecant
thumb|upright=1.25|The exsecant and versine functions substitute for the expressions and which appear frequently in certain applications.
thumb|upright=1.25|The names exsecant, versine, chord, etc. can also be applied to line segments related to a circular arc. The length of each segment is the radius times the corresponding trigonometric function of the angle.
haversine
REDIRECT Versine#hav
excosecant
REDIRECT Exsecant#excsc