AP EAPCET 16th May 2023 Shift 1 Solved Paper

Section: Mathematics

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Question : 8 of 160

Marks: +1, -0

If ω is a complex cube root of unity, then cos(

7

∑

k=1

(k−ω)(k−ω2)‌

π

175

)=

−1
0
1
5

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