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Factoring and product formulas
Quadratic equations
Progressions
Trigonometry
Probability theory
Statistics
Circle
Triangles
Quadrangles, polygons
Shape Areas
Solid figures
Equations of geometric shapes
Various
Combinatorics
Vectors
Logarithms

Factoring and product formulas
Quadratic equations
Progressions
Trigonometry
Probability theory
Statistics
Circle
Triangles
Quadrangles, polygons
Shape Areas
Solid figures
Equations of geometric shapes
Various
Combinatorics
Vectors
Logarithms

Math formulas
Shape Areas
Area of sector of a circle using angle

Area of sector of a circle using angle

$S = \frac{\pi\cdot R^{2}\cdot \alpha}{360}$

R - radius
α - central angle

Find

S
π
R
α

It is known that:

=

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a
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√

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cos

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ctg

log

arc sin

arc cos

arc tg

arc ctg

ln

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∫_

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lg

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