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A = [(0,-tan""(theta)/(2)),(tan""(theta)...

A = `[(0,-tan""(theta)/(2)),(tan""(theta)/(2),0)]` and `(I+A)(I-A)^-1=[(a,-b),(b,a)]`. Find `13(a^2+b^2)`

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JEE MAINS PREVIOUS YEAR-JEE MAIN 2021-SECTION-B
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