If A = [1 tan x; -tan x 1] is a 2×2 matrix, then AT · A-1 =

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Mathematics · Matrices

Verified Solution4 OptionsUpdated: October 2026👁️1 View

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[cos 2x -sin 2x; sin 2x cos 2x]

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Answer 1

[cos 2x sin 2x; -sin 2x cos 2x]

Answer 2

[cos 2x -sin 2x; sin 2x cos 2x]

Answer 3

[cos 2x sin 2x; sin 2x cos 2x]

Answer 4

[cos 2x -sin 2x; -sin 2x cos 2x]

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