NDA Math Trigonometric Ratios of Angles and Equations

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Question : 45 of 100

Marks: +1, -0

The expression ‌‌

sin‌α+sin‌β

cos‌α+cos‌β

is equal to ?

[NDA I 2017]

tan(‌‌
α+β
2
)
cot(‌‌
α+β
2
)
sin(‌‌
α+β
2
)
cos(‌‌
α+β
2
)

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