UPSC NDA II 2025 Mathematics Paper

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Question Numbers: 39-40
For the following two (02) items:
Let
A=[

cos⁡θ	sin‌⁡θ
−sin‌⁡θ	cos⁡θ

]

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Question : 40 of 120

Marks: +1, -0

What is [adjA]−1. equal to?

-A
−AT
A
AT

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