< 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 |
Sine | Ratio of opposite side over hypotnuse | ![]() | |
Cosine | Ratio of adjacent side over hypotnuse | ![]() | |
Tangent | Ratio of opposite over Adjacent | ![]() | |
Co tangent | Ratio of adjacent over opposite | ![]() | |
Secant | Ratio of 1 over opposite | ![]() | |
Co secant | Ratio of 1 over adjacent | ![]() |
Chracteristics
Periodic | |
Symmetry | |
Phase shift | |
Complex Power | với và 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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