TS EAMCET 03 May 2019 Shift 1 Solved Paper

Section: Mathematics

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Question : 22 of 160

Marks: +1, -0

cos

π

7

+ cos

2π

7

+ cos

3π

7

- cos

4π

7

+ cos

5π

7

- cos

6π

7

=

0
3
2
3
4
1

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