130207 5.2 sum and difference formulas.notebook 1 February 11, 2013 Section 5.2 Sum and Difference Formulas Questions: DLIQ How could we possibly remember these new sum and difference formulas?
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130207 5.2 sum and difference formulas.notebook
1
February 11, 2013
Section 5.2Sum and Difference Formulas
Questions: DLIQ
How could we possibly remember these new sum and difference formulas?
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What happend to sin? We applied the difference formula for cosine...
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The Cosine of the Difference of Two Angles
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Example
Example
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Sum and Difference Formulas for Cosines and Sines
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Example
Example
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Example
Sum and Difference Formulas for Tangents
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Homework:
page 587 #132 ALL
Note: Next class we will do 5.2 part II... the homework will be 3354 ALL
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Example
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(a)(b)(c)(d)
(a)
(b)
(c)
(d)
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(a)
(b)
(c)
(d)
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