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Questions  >>  JEEMAIN and NEET  >>  Mathematics  >>  Class12  >>  Determinants
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Q)

If $A(\theta)=\begin{bmatrix}1&\tan\theta\\-\tan\theta&1\end{bmatrix}$ and $AB=I$ then $(\sec^2\theta)B$ is equal to

$(a)\;A(\theta)\qquad(b)\;A(\large\frac{\theta}{2})$$\qquad(c)\;A(-\theta)\qquad(d)\;A(-\large\frac{\theta}{2})$

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