AP EAPCET 06-Jul-2022 Shift 1 Paper

Section: Mathematics

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Question : 23 of 160

Marks: +1, -0

The value of cos4x is

‌
3
8
+‌
1
2
‌cos‌2‌x+‌
1
8
‌cos‌4‌x
‌
3
8
−‌
1
2
‌cos‌2‌x+‌
1
8
‌cos‌4‌x
‌
3
8
−‌
1
8
‌cos‌4‌x+‌
1
2
‌cos‌2‌x
‌
1
8
‌cos‌4‌x+‌
1
2
‌cos‌2‌x−‌
3
8

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