Trigonometric functions

ACos	Inverse cosine, angle of a cosine
ACot	Inverse cotangent, angle of a cotangens
ACsc	Inverse cosecant, angle of a cosecant
ASec	Inverse secant, angle of a secant
ASin	Inverse sine, angle of a sine
ATan	Inverse tangent, angle of a tangent
Cos	Cosine of an angle
Cot	Cotangent of an angle
Csc	Cosekans of an angle
Sec	Secant of an angle
Sin	Sine of an angle
Sinc	Sinc function
Tan	Tangent of an angle
Degree to Radian converter
Radian to Degree converter