array l If z_ r = ( 3^ r )+i ( 3^ r ), r=1,2,3 Then value of z_ 1 z_ 2 z_ 3 . . is array
Mathematics · JEE Main · NTA Exams — Complex Numbers and Quadratic Equations
\[\begin{array}{l} \text { If } z_{r}=\cos \left(\frac{\pi}{3^{r}}\right)+i \sin \left(\frac{\pi}{3^{r}}\right), r=1,2,3 \ldots\\ \text { Then value of } z_{1} z_{2} z_{3} \ldots . . \text { is } \end{array}\]
- i
- - i
- 1
- -1
Answer
(C) 1
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