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Sedaia [141]
2 years ago
9

Find the sales tax for three CDs, if each CD is $14.29 and the sales tax is 7.25%.

Mathematics
2 answers:
den301095 [7]2 years ago
8 0
The total sales tax is $1.10
Pie2 years ago
8 0
45.98 is the answer to you problem
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Answer with Step-by-step explanation:

We have to prove that

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By using Euler's identity, we get

cos2\theta+isin2\theta=(cos\theta+isin\theta)^2

cos2\theta+isin2\theta=(cos^2\theta-sin^2\theta+2isin\theta cos\theta)

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