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If A=|[1,tanx],[-tanx,1]| , show that A^...

If `A=|[1,tanx],[-tanx,1]|` , show that `A^T\ A^(-1)=|[cos2x,-sin2x],[sin2x,cos2x]|` .

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RD SHARMA ENGLISH-ADJOINTS AND INVERSE OF MATRIX-All Questions
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