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JEE Advanced 2020 Full Test 1 Paper 2

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Paragraph for Question Nos. 53 and 54

If cos‌α+cos‌β+cos‌γ=0=sin‌α+sin‌β+sin‌γ and δ=‌

α+β+γ

3

. The difference of any two of the angles α,β,γ is equivalent to ‌

2π

3

. Then

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Question : 54

Total: 54

If one of the angles α,β,γ is ‌

then the cos‌12‌α+cos‌12‌β+cos‌12‌γ=

0
3
‌
3
2
‌
2049
2048

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