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3 years ago

3. Cathy is purchasing a DVD player and a TV at the local electronic store. The DVD player costs

Mathematics

1 answer:

Archy [21]3 years ago

5 0

Answer:

Cathy would have to pay $62.88 per month for them to come out to equal payments

Step-by-step explanation:

First you add $49.36 and $705.20 and you get $754.56

After you have to divide your answer by how many months which is 12 so you ed up gettibg 62.88

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Step-by-step explanation:

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3 years ago

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Taya2010 [7]

Answer:

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Step-by-step explanation:

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3 years ago

(1+cos2x)/(1-cos2x) = cot^2x

sesenic [268]

We will turn the left side into the right side.

$\dfrac{1 + \cos 2x}{1 - \cos2x} = \cot^2 x$

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$\cos 2x = \cos^2 x - \sin^2 x$

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$\dfrac{1 - \sin^2 x + \cos^2 x }{1 - \cos^2 x + \sin^2 x} = \cot^2 x$

Now use the identity

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3 years ago