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Veseljchak [2.6K]
2 years ago
14

I need help with this for math,

Mathematics
1 answer:
liraira [26]2 years ago
4 0
4. por.
5. non.
6. por.
7. non.
i hope they all right.

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Step-by-step explanation:

The equation we have is \sqrt{3-2cosx} =2. All we have to do is get cosine alone to find the 2 values of x.

3-2cosx=4\\-2cosx=1\\cosx=-\frac{1}{2}

Now that we have our cosine left, we can use our unit circle to figure out when does cosx=-1/2. Cosine is the x value of the coordinate.

x=2π/3

x=4π/3

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