COMEDK Exam 2018 Solved Paper

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Question : 136 of 180

Marks: +1, -0

cos2‌

π

12

+cos2‌

π

4

+cos2‌

5π

12

=

‌
3
2
‌
3−√3
2
‌
2
3
‌
2
3+√3

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