UPSC NDA II 2023 Mathematics Solved Paper

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Consider the following for the next two (02) items that follow :
Let p=‌
1
3
−‌
tan‌3‌x
tan‌x
and
q=1−3tan2x,0<x<π,x≠‌
Ï€
2
[NDA II 2023]
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Question : 75 of 120
 
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What is pq equal to ?
[NDA II 2023]
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