TS EAMCET 5 May 2018 Shift 2 Solved Paper

Section: Mathematics
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Question : 21 of 160
 
Marks: +1, -0
If cos‌
Ï€
15
‌cos
‌
2Ï€
15
‌cos
‌
4Ï€
15
‌cos
‌
5Ï€
15
cos‌
7Ï€
15
‌cos
‌
30Ï€
15
=x
,
then
1
8x
=
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