80 Videos for "addition"

The Sine Addition Formulas  Concept
Math › Trigonometry › Advanced Trigonometry
How to derive the sine of a sum formula. 
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 Cosine Addition Formulas  Concept
Math › Trigonometry › Advanced Trigonometry
How to derive the cosine of a difference formula. 
The Cosine Addition Formulas  Problem 1
Math › Trigonometry › Advanced Trigonometry
How to use the cosine of a difference formula to simplify an expression or to find the cosine of an angle. 
The Cosine Addition Formulas  Problem 1
Math › Precalculus › Advanced Trigonometry
How to use the cosine of a difference formula to simplify an expression or to find the cosine 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. 
The Cosine Addition Formulas  Concept
Math › Precalculus › Advanced Trigonometry
How to derive the cosine of a difference formula. 
Addition and Subtraction with Decimals  Problem 3
Math › PreAlgebra › Decimals and Percents
Word problem relating adding decimals to racing times 
Addition and Subtraction with Mixed Numbers  Problem 1
Math › PreAlgebra › Fractions and MIxed Numbers
Adding or subtracting mixed numbers 
Addition and Subtraction with Decimals  Problem 1
Math › PreAlgebra › Decimals and Percents
Adding decimals by vertically aligning the decimal point and adding zeros to make them the same length 
The Sine Addition Formulas  Problem 2
Math › Trigonometry › Advanced Trigonometry
How to derive the sine of a difference formula and use it to find the sine of an angle. 
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). 
Addition and Subtraction with Mixed Numbers  Problem 3
Math › PreAlgebra › Fractions and MIxed Numbers
Estimating sums and differences of mixed numbers 
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. 
Addition and Subtraction with Mixed Numbers  Problem 2
Math › PreAlgebra › Fractions and MIxed Numbers
Word problem involving adding mixed numbers 
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. 
Addition and Subtraction with Decimals  Problem 2
Math › PreAlgebra › Decimals and Percents
Subtracting decimals by vertically aligning the decimal point and adding zeros to make them the same length 
The Sine Addition Formulas  Problem 2
Math › Precalculus › Advanced Trigonometry
How to derive the sine of a difference formula and use it to find the sine of an angle. 
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 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).