For how many real values of $c$ do we have $\left|\frac12-ci\right| = \frac34$?
Question:
For how many real values of $c$ do we have $\left|\frac12-ci\right| = \frac34$?
Answer:
Let's think step by step.

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For how many real values of $c$ do we have $\left|\frac12-ci\right| = \frac34$?
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