Find the real-number root.
1 answer:
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Answer:
The y-coordinate of point A is .
Step-by-step explanation:
The equation of the circle is represented by the following expression:
(1)
Where:
- Independent variable.
- Dependent variable.
,
- Coordinates of the center of the circle.
- Radius of the circle.
If we know that ,
and
, then the equation of the circle is:
(1b)
Then, we clear within (1b):
(2)
If we know that , then the y-coordinate of point A is:
The y-coordinate of point A is .