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Let A(θ)=sinθicosθicosθsinθ, then

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a
A(θ)−1=A(−θ)
b
A(θ)−1=A(π−θ)
c
A(θ)−1 does not exist
d
A(θ)2=A(2θ)

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detailed solution

Correct option is B

|A(θ)|=sin2⁡θ−i2cos2⁡θ=1∴ A(θ)−1=sin⁡θ−icos⁡θ−icos⁡θsin⁡θ               =A(π−θ)


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