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UPSC NDA II 2025 Mathematics Paper

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

cos⁡θ	sin‌⁡θ
−sin‌⁡θ	cos⁡θ

]

Question : 39 of 120

Marks: +1, -0

What is the value of the determinant of the matrix A4

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