UPSC NDA II 2024 Mathematics Paper

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Question : 32 of 120
 
Marks: +1, -0
If ‌
x
cos‌⁡θ‌
=‌
y
cos‌⁡‌(‌
2π‌
3
−θ
)
=‌
z
cos‌⁡‌(‌
2π‌
3
+θ
)
 then what is x + y + z equal to? 
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