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[" If "A=[[-tan x,1]]" then "A^(TT)A^(-1...

[" If "A=[[-tan x,1]]" then "A^(TT)A^(-1)" is "],[" (c) "[[-cos2x,sin2x],[-sin2x,cos2x]]],[" (cos "[[cos2x,-sin2x],[sin2x,cos2x]]],[," Clea "],[,[cos2x,cos2x],[cos2x,sin2x]]],[" None of these "]

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cos2x-sin2x>=0

If A=[[1,tanx],[-tanx,1]] ,Show that A^TA^(-1)=[[cos2x,-sin2x],[sin2x,cos2x]]

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