Find the coordinates of the points where the line $y = frac{1}{2}$ intersects the unit circle.
Answer 1
To find the intersection points of the line $y = \frac{1}{2}$ and the unit circle, we start with the equation of the unit circle, which is $x^2 + y^2 = 1$.
Substituting $y = \frac{1}{2}$ into the circle’s equation, we get:
$x^2 + \left(\frac{1}{2}\right)^2 = 1$
Simplifying this, we obtain:
$x^2 + \frac{1}{4} = 1$
We then isolate $x^2$:
$x^2 = 1 – \frac{1}{4}$
Simplifying further:
$x^2 = \frac{3}{4}$
Taking the square root of both sides, we get:
$x = \pm \frac{\sqrt{3}}{2}$
Thus, the intersection points are:
$(x, y) = \left( \frac{\sqrt{3}}{2}, \frac{1}{2} \right)$ and $(x, y) = \left( -\frac{\sqrt{3}}{2}, \frac{1}{2} \right)$
Answer 2
To determine the intersection points of the line $y = frac{1}{2}$ with the unit circle, let’s begin with the unit circle’s equation $x^2 + y^2 = 1$.
Substitute $y = frac{1}{2}$:
$x^2 + left( frac{1}{2}
ight)^2 = 1$
Simplify to:
$x^2 + frac{1}{4} = 1$
Then:
$x^2 = 1 – frac{1}{4}$
Which gives:
$x^2 = frac{3}{4}$
Taking the positive and negative square roots, we find:
$x = pm frac{sqrt{3}}{2}$
The solution thus yields the points:
$(frac{sqrt{3}}{2}, frac{1}{2})$ and $( -frac{sqrt{3}}{2}, frac{1}{2})$
Answer 3
To find intersection points of the line $y = frac{1}{2}$ with the unit circle $x^2 + y^2 = 1$, substitute $y$:
$x^2 + left(frac{1}{2}
ight)^2 = 1$
Simplify:
$x^2 + frac{1}{4} = 1$
$x^2 = frac{3}{4}$
Hence:
$x = pm frac{sqrt{3}}{2}$
Coordinates are: $( frac{sqrt{3}}{2}, frac{1}{2})$ and $( -frac{sqrt{3}}{2}, frac{1}{2})$
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