132 Videos for "sum"

The Sine Addition Formulas  Problem 1
Math › Trigonometry › Advanced Trigonometry
How to use the sine of a sum formula to simplify an expression or to find the sine of an angle. 
The Sine Addition Formulas  Problem 1
Math › Precalculus › Advanced Trigonometry
How to use the sine of a sum formula to simplify an expression or to find the sine of an angle. 
Exterior Angles of a Polygon  Concept
Math › Geometry › Polygons
How to find the sum of the exterior angles in a polygon and find the measure of one exterior angle in an equiangular polygon. 
Solving a Rational Equation  Problem 5
Math › Algebra 2 › Rational Expressions and Functions
Turning sums and differences into proportions to enable cross multiplication. 
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. 
Simplifying Expressions with Exponents  Problem 4
Math › Algebra › Exponents
Overview of when exponents can be "distributed," or applied to products or quotients, and how exponents can not be applied to sums or differences. 
Simplifying Complex Fractions  Problem 6
Math › Algebra 2 › Rational Expressions and Functions
Simplifying fractions that have sums and differences of terms with negative exponents. 
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. 
Derivatives of Polynomial Functions  Problem 1
Math › Calculus › The Derivative
How to use the constant multiple rule and the sum rule to differentiate combinations of power functions, radical functions, and reciprocal functions. 
The Definite Integral  Concept
Math › Calculus › The Definite Integral
How to define the definite integral. 
Arithmetic Series  Problem 3
Math › Algebra 2 › Sequences and Series
How to evaluate a summation notation that yields an arithmetic series. 
Geometric Series  Problem 3
Math › Precalculus › Sequences and Series
How to evaluate a summation notation that yields a geometric series. 
The Definite Integral  Problem 2
Math › Calculus › The Definite Integral
How to evaluate a definite integral that involves a parabola. 
The Definite Integral  Problem 1
Math › Calculus › The Definite Integral
How to use geometry to find the definite integral. 
Arithmetic Series  Problem 3
Math › Precalculus › Sequences and Series
How to evaluate a summation notation that yields an arithmetic series. 
Approximating Area Using Rectangles  Concept
Math › Calculus › The Definite Integral
How to approximate the area under a curve using rectangles. 
Geometric Series  Problem 3
Math › Algebra 2 › Sequences and Series
How to evaluate a summation notation that yields a geometric series. 
The DoubleAngle Formulas  Concept
Math › Trigonometry › Advanced Trigonometry
How to use the sine and cosine addition formulas to prove the doubleangle formulas. 
The DoubleAngle Formulas  Concept
Math › Precalculus › Advanced Trigonometry
How to use the sine and cosine addition formulas to prove the doubleangle formulas. 
Geometric Series  Problem 10
Math › Precalculus › Sequences and Series
Finding the term number, n, for a known sum in a geometric series.