11 Videos for "cosine of a difference formula"

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  Concept
Math › Precalculus › Advanced Trigonometry
How to derive the cosine of a difference formula. 
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. 
Using the Sine and Cosine Addition Formulas to Prove Identities  Problem 3
Math › Trigonometry › Advanced Trigonometry
How to use the sine and cosine addition formulas to prove a difference formula for tangent. 
Using the Sine and Cosine Addition Formulas to Prove Identities  Problem 3
Math › Precalculus › Advanced Trigonometry
How to use the sine and cosine addition formulas to prove a difference formula for tangent. 
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 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). 
The Sine Addition Formulas  Concept
Math › Trigonometry › Advanced Trigonometry
How to derive the sine of a sum formula. 
The Sine Addition Formulas  Concept
Math › Precalculus › Advanced Trigonometry
How to derive the sine of a sum formula. 
Converting from Polar Coordinates to Rectangular  Problem 3
Math › Precalculus › Polar Coordinates and Complex Numbers
How to convert a polar equation into rectangular form, and describe the shape of its graph.