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Arada [10]
3 years ago
7

Pre calculus law of sines

Mathematics
1 answer:
lakkis [162]3 years ago
6 0

Answer:

AB = 6.5

Step-by-step explanation:

C = 59°

AC = 7

CD = 6

AB = ?

Apply the Law of Cosines, which is AB² = AC² + CD² - 2(AC)(CD)*Cos(C)

AB² = 7² + 6² - 2(7)(6)*Cos(59)

AB² = 85 - 43.26

AB² = 41.74

AB = √41.74

AB = 6.5 (nearest tenth)

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maxonik [38]

Answer:

Ok ok, I see. So the answer is -9.

Step-by-step explanation:

We know the expresion is:

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We need to distrubute the -3 to what is in the parthese.

When I say distribute, basically you need to multiply the numbers inside the parethese by -3. So we can think of it as:

-3*-2=6

and:

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Which we can rewrite as:

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Subtract 15 from 6 and you get -9:

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Sorry hope this helps!

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Answer:

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Step-by-step explanation:

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Rzqust [24]

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