Objective Express products as sums Express sums as products Product to Sum Formula for cosine Show that Example1 Express the following product of cosines as a sum Example2 Use the producttosum formula to write the product as a sum or difference ID: 1030010
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1. Sum to product and product-to-sum formulasObjective:Express products as sums.Express sums as products.
2. Product to Sum Formula for cosineShow that
3. Example-1Express the following product of cosines as a sum:
4. Example-2Use the product-to-sum formula to write the product as a sum or difference: cos(2θ)cos(4θ)
5. Example-3:Show that
6. Example-4:Rewrite the product sin4xcos5x as a sum or difference.
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9. Example-5Sum to product Formula for cosineProve the following sum to product formula.
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12. Example-6Write the following sums of cosines expression as a product: cos(4θ) + cos(2θ).
13. Classwork
14. Try MeWrite the following difference of sines expression as a product: sin(4θ)− sin(2θ).Ans: 2sinθcos(3θ.
15. Why not me?Find the exact value ofAns:
16. HomeworkWorksheet