Please provide the solution Q 52 If zr=cosran2+i sinran2, where r = 1, 2, 3, - Maths - Complex Numbers and Quadratic Equations

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Q 52 If z r = cos r a n 2 + i   sin r a n 2 , where r = 1, 2,
3, , n, then lim n → ∞ z 1 z 2 z n is equal to:

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Please provide the solution Q.52. If z r = cos r a n 2 + i sin r a n 2 , where r = 1, 2, 3, ...., n, then lim n → ∞ z 1 . z 2 . . . . . . z n is equal to: