Unit Circle
Trigonometry
A unit circle with sine (sin), cosine (cos), tangent (tan), cotangent (cot), secant (sec), cosecant (csc), versine (versin), coversine (cvs), exsecant (exsec), excosecant (excsc) as well as chord (crd) and arc labeled as trigonometric functions of angle theta
Wikipedia: Limaner, Stevertigo, Verdy p, Taktoa, Matthiaspaul
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O
θ
A
B
C
D
E
F
G
H
1
^
sin
cvs
excsc
csc
cos
versin
exsec
sec
crd
arc
cot
tan