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UPSC NDA Math Model Paper 5

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Comprehension:(Que No. 25 - 26)
Directions: For the next two (02) items that follow:
Consider the curve x=a(cos‌θ+θ‌sin‌θ) and y=a(sin‌θ−θ‌cos‌θ)

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Question : 25 of 120

Marks: +1, -0

What is

equal to?

tan‌θ
cot‌θ
sin‌2‌θ
cos‌2‌θ

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