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ki77a [65]
3 years ago
7

Use the law of cosines to find the balue of cos 0 . Round to answer to two decimal places

Mathematics
1 answer:
chubhunter [2.5K]3 years ago
6 0

Answer:

C

Step-by-step explanation:

Using the law of cosines then cosΘ is the following quotient

cosΘ = \frac{a^2+b^2-c^2}{2ab}

where a = 5.8, b = 10.5 and c = 10.9

cosΘ = \frac{5.8^2+10.5^2-10.9^2}{2(5.8)(10.5)}

        = \frac{33.64+110.25-118.81}{121.8}

        = \frac{25.08}{121.8} = 0.21 → C

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Whats a function rule for -3,-7,-11,-15
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Answer:

Subtract 4

Step-by-step explanation:

-3 - 4 = -7

-7 - 4 = -11

-11 - 4 = -15

7 0
2 years ago
A simple random sample of ten people is taken from the set of all registered voters in a given district to determine their avera
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Answer:

The sample size is not appropriate.

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Answer:

The statement can be expressed as

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Step-by-step explanation:

Given that

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It would help to know the meaning of the symbols used, this will help understand the statement better.

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The statement

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can be expressed as:

There are two different students in your class who have visited the same websites.

6 0
2 years ago
Find the​ slope, if it​ exists, of the line containing the pair of points (4,−4) and (−2,−4).
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Answer:

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6 0
3 years ago
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kiruha [24]

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1. D

2. A

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4. D

5. B

6. B

7. C

8. D

have a good day.

7 0
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