Trigonometric Ratios and Identities

Section: Mathematics

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Question : 63 of 64

Marks: +1, -0

Let α,β be such that π<α−β<3π.
If sin‌α+sin‌β=−‌

21

65

and cos‌α+cos‌β=−‌

27

65

then the value of cos‌

α−β

2

[AIEEE 2004]

‌
−6
65
‌
3
√130
‌
6
65
−‌
3
√130

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