1300 Math Formulas is app that has useful formulas:

Number Sets
- Set Identities
- Sets of Numbers
- Basic Identities
- Complex Numbers

Algebra
- Factoring Formulas
- Product Formulas
- Powers
- Roots
- Logarithms
- Equations
- Inequalities
- Compound Interest Formulas

Geometry
- Right Triangle
- Isosceles Triangle
- Equilateral Triangle
- Scalene Triangle
- Square
- Rectangle
- Parallelogram
- Rhombus
- Trapezoid
- Isosceles Trapezoid
- Isosceles Trapezoid with Inscribed Circle
- Trapezoid with Inscribed Circle
- Kite
- Cyclic Quadrilateral
- Tangential Quadrilateral
- General Quadrilateral
- Regular Hexagon
- Regular Polygon
- Circle
- Sector of Circle
- Segment of Circle
- Cube
- Rectangular Parallelepiped
- Prism
- Regular Tetrahedron
- Regular Pyramid
- Frustum of a Regular Pyramid
- Rectangular Right Wedge
- Platonic Solids
- Right Circular Cylinder
- Right Circular Cylinder with an Oblique Plane Face
- Right Circular Cone
- Frustum of a Right Circular Cone
- Sphere
- Spherical Cap
- Spherical Sector
- Spherical Segment
- Spherical Wedge
- Ellipsoid
- Circular Torus

Trigonometry
- Radian and Degree Measures of Angles
- Definitions and Graphs of Trigonometric Functions
- Signs of Trigonometric Functions
- Trigonometric Functions of Common Angles
- Most Important Formulas
- Reduction Formulas
- Periodicity of Trigonometric Functions
- Relations between Trigonometric Functions
- Addition and Subtraction Formulas
- Double Angle Formulas
- Multiple Angle Formulas
- Half Angle Formulas
- Half Angle Tangent Identities
- Transforming of Trigonometric Expressions to Product
- Transforming of Trigonometric Expressions to Sum
- Powers of Trigonometric Functions
- Principal Values of Inverse Trigonometric Functions
- Relations between Inverse Trigonometric Functions
- Trigonometric Equations
- Relations to Hyperbolic Functions

Matrices and Determinants
- Determinants
- Properties of Determinants
- Matrices
- Operations with Matrices
- Systems of Linear Equations

Vectors
- Vector Coordinates
- Vector Addition
- Vector Subtraction
- Scaling Vectors
- Scalar Product
- Vector Product
- Triple Product

Analytic Geometry
- One-Dimensional Coordinate System
- Two-Dimensional Coordinate System
- Straight Line in Plane
- Circle
- Ellipse
- Hyperbola
- Parabola
- Three-Dimensional Coordinate System
- Plane
- Straight Line in Space
- Quadric Surface
- Sphere

Differential Calculus
- Functions and Their Graphs
- Limits of Functions
- Definition and Properties of the Derivative
- Table of Derivatives
- Higher Order Derivatives
- Application of Derivative
- Multivariable Functions
- Differential Operators

Integral Calculus
- Indefinite Integral
- Integrals of Rational Functions
- Integrals of Irrational Functions
- Integrals of Trigonometric Functions
- Integrals of Hyperbolic Functions
- Integrals of Exponential and Logarithmic Functions
- Reduction Formulas
- Definite Integral
- Improper Integral
- Double Integral
- Triple Integral
- Line Integral
- Surface Integral

Differential Equations
- First Order Differential Equations
- Second Order Ordinary Differential Equations
- Some Partial Differential Equations

Series
- Arithmetic Series
- Geometric Series
- Some Finite Series
- Infinite Series
- Properties of Convergent Series
- Convergence Tests
- Alternating Series
- Power Series
- Differentiation and Integration of Power Series
- Taylor and Maclaurin Series
- Binomial Series
- Fourier Series

Probability
- Permutations and Combinations
- Probability Formulas

Enjoy this app and be a better in Math.