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Explanation:</h2><h2>
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Hello! Remember you have to write complete questions in order to get good and exact answers. Anyway, I'll help you either way. A sector is a region of a circle between two radii. Let's assume the sector as:

Then, we can find the central angle by the following equation:

But:

Then:

Answer:
x = 2 and x = -2
Step-by-step explanation:
The easiest way is to guess. We know that you can't have a square root of a negative number. This constrains x between negative infinity to 2. Testing 2 and -2, we see that it satisfy the equation.
The more systematic approach is shown below


x= -2, 2
Answer:

Explanation:

<u>using the formula:</u>
