22 Videos for "the cosine addition formulas"

Using the Sine and Cosine Addition Formulas to Prove Identities  Concept
Math › Trigonometry › Advanced Trigonometry
How to use the sine and cosine addition formulas to prove the cofunction identities. 
Using the Sine and Cosine Addition Formulas to Prove Identities  Concept
Math › Precalculus › Advanced Trigonometry
How to use the sine and cosine addition formulas to prove the cofunction identities. 
Using the Sine and Cosine Addition Formulas to Prove Identities  Problem 1
Math › Trigonometry › Advanced Trigonometry
How to use the sine and cosine addition formulas to prove the "add pi" identities. 
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. 
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 1
Math › Precalculus › Advanced Trigonometry
How to use the sine and cosine addition formulas to prove the "add pi" identities. 
The Cosine Addition Formulas  Concept
Math › Trigonometry › Advanced Trigonometry
How to derive the cosine of a difference formula. 
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 › 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. 
Using the Sine and Cosine Addition Formulas to Prove Identities  Problem 2
Math › Trigonometry › Advanced Trigonometry
How to use the sine and cosine supplementary angle identities. 
Using the Sine and Cosine Addition Formulas to Prove Identities  Problem 2
Math › Precalculus › Advanced Trigonometry
How to use the sine and cosine supplementary angle identities. 
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 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 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 › Precalculus › Advanced Trigonometry
How to derive the sine of a sum formula. 
The Sine Addition Formulas  Concept
Math › Trigonometry › Advanced Trigonometry
How to derive the sine of a sum formula. 
The DoubleAngle Formulas  Problem 2
Math › Trigonometry › Advanced Trigonometry
How to derive a tripleangle formula for cosine. 
The DoubleAngle Formulas  Concept
Math › Precalculus › Advanced Trigonometry
How to use the sine and cosine addition formulas to prove the doubleangle formulas.