If z 1 and z 2 are two complex numbers satisfying the equation | z_ 1 +i z_ 2 z_ 1 -i z_…
Mathematics · JEE Advanced · NTA Exams — Complex Numbers and Quadratic Equations
If z1 and z2 are two complex numbers satisfying the equation \(\left|\frac{z_{1}+i z_{2}}{z_{1}-i z_{2}}\right|=1 \text {, then } \frac{z_{1}}{z_{2}}\) is
- purely real
- of unit modulus
- purely imaginary
- None of these
Answer
(A) purely real
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