AP and TS EAMCET Engineering Model Paper 16

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Question : 11 of 160

Marks: +1, -0

If A=[

cos‌θ	−sin‌θ
sin‌θ	cos‌θ

] and AT+A=I2 then

θ=nπ;n∈Z
θ=(2n+1)
π
2
;n∈Z
θ=2nπ±
π
3
;n∈Z
θ=nπ+(−1)n,n∈Z

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