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Select the correct option from the given alternatives: If `[[1,-tantheta],[tantheta,1]]([[1,tantheta],[-tantheta,1]])^-1 = [[a,-b],[b,a]]` then, i] `a=1,b=1` ii] `a=cos2theta,b=sin2theta` iii] `a=sin2theta,b=cos2theta` iv] `a=0,b=1`

A

`a=1,b=1`

B

`a=cos2theta,b=sin2theta`

C

`a=sin2theta,b=cos2theta`

D

`a=0,b=1`

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CHETANA PUBLICATION-Matrices-EXERCISE
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