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The Cable and Telecommunications Professionals' Reference, 3rd Edition by Goff Hill

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19  Trigonometric Functions and General Formulae

J. Barron

Mathematical Signs and Symbols

Sign, symbol

Quantity

=

equal to

not equal to

identically equal to

Δ

corresponds to

approximately equal to

approaches

proportional to

infinity

<

smaller than

>

larger than

smaller than or equal to

larger than or equal to

|a|

magnitude of a

an

a raised to the power n

Image

square root of a

Image

mean value of a

p!

factorial p (1 × 2 × 3 × . . . × p)

binomial coefficient

Σ

Sum

Π

Product

f(x)

function f of the ...

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