If \sin\theta_{1}+\sin\theta_{2}+\sin\theta_{3}+\sin\theta_{4}=4 then what is the value of \cos\theta_{1}+\cos\theta_{2}+\cos\theta_{3}+\cos\theta_{4}=? [NDA II 2016]

UPSC NDA 2 2016 Mathematics Solved Paper

Question : 43 of 120

Marks: +1, -0

If sin‌θ1+sin‌θ2+sin‌θ3+sin‌θ4=4 then what is the value of cos‌θ1+cos‌θ2+cos‌θ3+cos‌θ4=?

[NDA II 2016]

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