Function
Name
Name
Function
Abbreviations
Abbreviations
Ratio
Sine
sin (θ) or sin
θ
side opposite θ
hypotenuse
hypotenuse
Cosine
cos (θ) or cos
θ
side adjacent θ
hypotenuse
hypotenuse
Tangent
tan (θ) or tan
θ
side opposite θ
side adjacent θ
side adjacent θ
Cotangent
cot (θ) or cot
θ
side adjacent θ
side opposite θ
side opposite θ
Secant
sec (θ) or sec
θ
hypotenuse
side adjacent θ
side adjacent θ
Cosecant
csc (θ) or csc
θ
hypotenuse
side opposite θ
side opposite θ