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UPSC NDA 2 2022 Mathematics Solved Paper

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Consider the following for the next three (03) items that follow:
Let z=‌

1+i‌sin‌θ

1−i‌sin‌θ

where i=√−1

[NDA II 2022]

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Question : 16

Total: 120

What is the modulus of z ?

1
√2
1+sin2θ
‌
1+sin2θ
1−sin2θ

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