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Precalculus: Graphs and Models, A Right Triangle Approach
The following points are on the unit circle. Find the coordinates of their reflections across (a) the $x$ -axis, (b) the y-axis, and (c) the origin.$$\left(-\frac{3}{4}, \frac{\sqrt{7}}{4}\right)$$
$$\left(-\frac{3}{4}, \frac{\sqrt{7}}{4}\right)$$