TS EAMCET Engineering 12 May 2023 Shift 2 Solved Paper

Section: Mathematics

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Question : 27 of 160

Marks: +1, -0

If f(θ)=cos3θ+cos3(‌

2π

3

+θ)+cos3(θ−‌

2π

3

) then f(‌

π

5

)=

[TG EAPCET 12 May 2023 Shift 2]

‌
3(√5−1)
16
‌
3√10−2√5
8
‌
3√10+2√5
8
‌
3(√5+1)
16

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