JEE Main 27 June 2022 Shift 1 Solved Paper

Section: Mathematics
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Question : 18 of 90
 
Marks: +1, -0
The value of cos(‌
2Ï€
7
)
+cos(‌
4Ï€
7
)
+cos(‌
6Ï€
7
)
is equal to:
[27-Jun-2022-Shift-1]
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