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Geometry
Area of plane shapes
Area of a triangle
Area of a right triangle
Heron's formula for area
Area of an isosceles triangle
Area of an equilateral triangle
Area of a triangle  "side angle side" (SAS) method
Area of a triangle  "side and two angles" (AAS or ASA) method
Area of a square
Area of a rectangle
Area of a parallelogram
Area of a rhombus
Area of a trapezoid
Area of an isosceles trapezoid
Area of a regular polygon
Area of a circle
Area of a sector of a circle
Area of a circular segment
Area of an annulus
Area of a sector of an annulus
Area of an ellipse
All formulas for area of plane figures
Surface Area
Surface area of a cube
Surface area of a rectangular prism
Surface area of a sphere
Surface area of a spherical segment
Surface area of a spherical zone
Surface area of a spherical sector
Surface area of a cylinder
Surface area of a cone
Surface area of a truncated cone
Surface area of a regular pyramid
Surface area of a regular truncated pyramid
All formulas for surface area of shapes
Perimeter of figures
Perimeter of a triangle
Perimeter of a rectangle
Perimeter of a square
Perimeter of a parallelogram
Perimeter of a rhombus
Perimeter of a trapezoid
Circumference of a circle
Length of an arc
Length of an arc, the Huygens formula
All formulas for perimeter of geometric figures
Volume of geometric shapes
Volume of a cube
Volume of a rectangular prism
Volume of a sphere
Volume of a spherical segment
Volume of a spherical zone
Volume of a spherical sector
Volume of a cylinder
Volume of a cone
Volume of a truncated cone
Volume of a pyramid
Volume of a truncated pyramid
Volume of a regular pyramid
Volume of a regular triangular pyramid
Volume of a regular quadrangular pyramid
Volume of a regular tetrahedron
All formulas for volume of geometric solids
Radius of a circumscribed circle
Triangle
Equilateral triangle
isosceles triangle
Right triangle
Square
Rectangle
Isosceles trapezoid
Regular hexagon
Regular polygon
All formulas for radius of a circumscribed circle.
Radius of a circle inscribed
Triangle
Equilateral triangle
Isosceles triangle
Right triangle
Square
Rhombus
Isosceles trapezoid
Regular polygon
Regular hexagon
All formulas for radius of a circle inscribed
Geometry theorems
The Pythagorean Theorem
The law of Sines
The law of Cosines
Theorems
Trigonometric identities
Sum of angles
Difference of angles
Double angle
Triple angle
Halfangle
Functions squared
Functions cubed
Sum of functions
Difference of functions
Product of functions
All basic formulas of trigonometric identities
Triangles
Side of a triangle
Height of a triangle
Bisector of a triangle
Median of a triangle
Sides of an isosceles triangle
Height, Bisector and Median of an isosceles triangle
Sides of a right triangle
Height of a right triangle
Bisector of a right triangle
Median of a right triangle
Height, Bisector and Median of an equilateral triangle
All geometry formulas for any triangles
Parallelogram
Sides of a parallelogram
Diagonals of a parallelogram
Angles of a parallelogram
Angles between diagonals of a parallelogram
Height of a parallelogram and the angle of intersection of heights
The sum of the squared diagonals of a parallelogram
The length and the properties of a bisector of a parallelogram
All formulas for parallelogram
Trapezoid
Side of a trapezoid
Diagonal of a trapezoid
Midline of a trapezoid
Height of a trapezoid
Sides of an isosceles trapezoid
Diagonals of an isosceles trapezoid
Midline of an isosceles trapezoid
Height of an isosceles trapezoid
Sides (bases) of a right trapezoid
Lateral sides and height of a right trapezoid
Diagonal of a right trapezoid
Midline of a right trapezoid
All basic formulas for trapezoid
Rhombus
Side of a rhombus
Diagonals of a rhombus
Angles of a rhombus
All formulas of a rhombus
Circle
Length of a chord of a circle
Height of a segment of a circle
All formulas of a circle
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What is the law of cosines, formula.
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Written by
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Published: 07 July 2019
Last Updated: 18 July 2019
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 opposite
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Formulas of law of cosines :
Geometry theorems
The Pythagorean Theorem
The law of Sines
The law of Cosines
Theorems
Geometry
Area of plane shapes
Surface Area
Perimeter of figures
Volume of geometric shapes
Radius of a circumscribed circle
Radius of a circle inscribed
Geometry theorems
Trigonometric identities
Triangles
Parallelogram
Trapezoid
Rhombus
Circle