UPSC NDA I 2022 Mathematics Solved Paper

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Question : 30 of 120

Marks: +1, -0

Let sin‌2‌θ=cos‌3‌θ, where θ is acute angle. What is the value of 1+4‌sin‌θ ? ( given that sin‌18∘=‌

√5−1

4

)

[NDA-I 2022]

√3
2
√5
3

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