<u>Answer:</u>
The correct answer option is B. 0.21.
<u>Step-by-step explanation:</u>
We are to find the value of
using the law of cosines.
We know that the formula of the cosine rule is given by:
![c ^ 2 = a ^ 2 + b ^ 2 - 2 a b cos C](https://tex.z-dn.net/?f=%20c%20%5E%202%20%3D%20a%20%5E%202%20%2B%20b%20%5E%202%20-%202%20a%20b%20cos%20C%20)
So substituting the given values in the above formula:
![10.9 ^ 2 = 5.8 ^ 2 + 10.5 ^ 2 - 2 (5.8) (10.5) cos C](https://tex.z-dn.net/?f=%2010.9%20%5E%202%20%3D%205.8%20%5E%202%20%2B%2010.5%20%5E%202%20-%202%20%285.8%29%20%2810.5%29%20cos%20C%20)
![118.81=33.64+110.25-121.8cosC](https://tex.z-dn.net/?f=118.81%3D33.64%2B110.25-121.8cosC)
![118.81 - (33.64+110.25) = -121.8cosC](https://tex.z-dn.net/?f=118.81%20-%20%2833.64%2B110.25%29%20%3D%20-121.8cosC)
![118.81-143.86=-121.8cosC](https://tex.z-dn.net/?f=118.81-143.86%3D-121.8cosC)
![cosC=\frac{-25.05}{-121.8}](https://tex.z-dn.net/?f=cosC%3D%5Cfrac%7B-25.05%7D%7B-121.8%7D)
cos C = 0.21
Answer:
The function in quadrant I, where y is increasing upward.
Step-by-step explanation:
The smaller x becomes, the larger f(x) becomes. The answer is that f(x) or y approaches infinity as x becomes smaller and smaller. This helps to understand why division by zero is undefined.
Here you go! Hope this helps!! :-)
The value is C because it represents the shift
The answer is variable expenses.
Answer:
There are 9 arms.
Step-by-step explanation: