< Fundamental Mathematics

Angles

When two lines AB and AC cuts at one point A , angle is formed at point A between AB and AC . Angle is denoted as . Angle is measured in Degree (o) or Radian (Rad) .

To convert degrees to radians:

To convert radians to degrees:

Trigonometric functions

Fundamental trigonometric functions

Relation of right triangle sides are defined as trigonometric functions. They are:

Trignometric Function Definition Mathematical Formula Graphs
SineRatio of opposite side over hypotnuse
CosineRatio of adjacent side over hypotnuse
TangentRatio of opposite over Adjacent
Co tangentRatio of adjacent over opposite
SecantRatio of 1 over opposite
Co secantRatio of 1 over adjacent

Chracteristics

Periodic

Symmetry


Phase shift


Complex Power


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de Moivre's formula:
Limit

Derivative

Trigonometric formulas

Fundamental trigonometry function

Sum and difference angles

Reduced power

Half angles

      and     and  

Product of trigonomtric functions

Inverse trigonometric functions

Complex number

With

Hence

Infinite Product

Limits

Derivatives

Common Trigonomtric functions

Double angle trigonometric functions

In general,

If Tn is Chebyshev n ordered then

De Moivre formula:

hạt nhân Dirichlet Dn(x) sẽ xuất hiện trong các công thức sau:

Triple angle trigonometric functions

Series

Integrals

Complex trigonometric functions

Further reading

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