AP EAPCET 05-Jul-2022 Shift 2 Paper

Section: Mathematics

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Question : 23 of 160

Marks: +1, -0

Let α,β be two real number such that π<(α−β)<3π. If sin‌α+sin‌β−‌

−21

65

and cos‌α+cos‌β=‌

−2

65

, then cos(‌

β−α

2

)=

‌
3
√130
‌
−3
√130
‌
130
√3
‌
−√130
3

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