Broadcast Engineer's Reference Book

J Barron BA, MA (Cantab)University of Cambridge

1.2 Engineering Mathematics,Formulas and Calculations

1.2.1 Mathematical Signs and SymbolsCalculations

Sign, symbol	Quantity
lb x; log2 x	binary logarithm of x
sin x	sine of x
cos x	cosine of x
tan x;tg x	tangent of x
cot x; ctg x	cotangent of x
sec x	secant of x
cosec x	cosecant of x
arcsin x, etc.	arc sine of x, etc.
sinh x, etc.	hyperbolic sine of x, etc.
arsinh x, etc.	inverse hyperbolic sine of x, etc.
i, j	imaginary unity, i2 = −1
Re z	real part of z
Im z	imaginary part of z