250 Videos for "formulas"

The Euler Formula  Concept
Math › Precalculus › Polar Coordinates and Complex Numbers
How to use the Euler Formula to convert a complex number from the exponential form to rectangular form. 
Other Forms of the Cosine DoubleAngle Formula  Concept
Math › Trigonometry › Advanced Trigonometry
How to derive two more cosine doubleangle formulas. 
The Cosine Addition Formulas  Problem 2
Math › Precalculus › Advanced Trigonometry
How to derive the cosine of a sum formula and use it to find the cosine of an angle. 
The Cosine Addition Formulas  Problem 3
Math › Trigonometry › Advanced Trigonometry
How to evaluate cos(a ? b) and cos(a + b) when you know only sin(a) and cos(b). 
The Sine Addition Formulas  Problem 3
Math › Trigonometry › Advanced Trigonometry
How to evaluate sin(a ? b) and sin(a + b) when you know only cos(a) and sin(b). 
The Quadratic Formula  Problem 2
Math › Algebra › Quadratic Equations and Functions
How to use the quadratic formula with decimal approximations or simple radical form solutions. 
The Cosine Addition Formulas  Problem 3
Math › Precalculus › Advanced Trigonometry
How to evaluate cos(a ? b) and cos(a + b) when you know only sin(a) and cos(b). 
Other Forms of the Cosine DoubleAngle Formula  Concept
Math › Precalculus › Advanced Trigonometry
How to derive two more cosine doubleangle formulas. 
Midpoint Formula  Concept
Math › Algebra 2 › Graphs of Linear Equations
How to find the midpoint of two points. 
The Midpoint and Distance Formulas in 3D  Concept
Math › Precalculus › Vectors and Parametric Equations
How to derive the formula for the midpoint of a segment in three dimensions. 
The Sine Addition Formulas  Problem 3
Math › Precalculus › Advanced Trigonometry
How to evaluate sin(a ? b) and sin(a + b) when you know only cos(a) and sin(b). 
The Euler Formula  Problem 1
Math › Precalculus › Polar Coordinates and Complex Numbers
How to use the Euler Formula to convert a complex number from rectangular form to the exponential form. 
The Euler Formula  Problem 2
Math › Precalculus › Polar Coordinates and Complex Numbers
How to derive our method for multiplying complex numbers and DeMoivre's Theorem using Euler's Formula. 
The Cosine Addition Formulas  Problem 2
Math › Trigonometry › Advanced Trigonometry
How to derive the cosine of a sum formula and use it to find the cosine of an angle. 
The Midpoint and Distance Formulas in 3D  Problem 1
Math › Precalculus › Vectors and Parametric Equations
How to find the length and midpoint of a segment in three dimensions. 
The Quadratic Formula  Problem 5
Math › Algebra › Quadratic Equations and Functions
Tips for solving with the quadratic formula correctly. 
The Quadratic Formula  Problem 7
Math › Algebra › Quadratic Equations and Functions
Solving with the Quadratic Formula after dividing by a common factor. 
The Quadratic Formula  Problem 9
Math › Algebra › Quadratic Equations and Functions
Derivation of the quadratic formula using completing the square. 
The Quadratic Formula  Problem 11
Math › Algebra › Quadratic Equations and Functions
Songs to help remember the quadratic formula. 
Formulas  Problem 2
Math › PreAlgebra › Solving Equations and Inequalities
Solving literal equations for a variable in geometry formulas