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Choose the correct answer from the bracket. If `A=[(cosx,sinx),(-sinx,cosx)]` and `A(adjA)=k[(1,0),(0,1)]`, then the value of k is a)0 b)3 c)1 d)2

A

0

B

3

C

1

D

2

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BODY BOOKS PUBLICATION-DETERMINANTS-EXERCISE
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  6. If A=[[1,-1,1],[2,-1,0],[1,0,0]], Find A^2

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  7. If A=[[1,-1,1],[2,-1,0],[1,0,0]], Show that A^2=A^-1

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  8. Choose the correct answer. If each element of a third order square mat...

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  10. Consider the matrix A=[(-8,5),(2,4)] Hence find A^-1.

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  11. If A and B are matrices of order 3 such that abs[A]=-1,abs[B]=3,then...

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

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  19. If A=[[3,-2,3],[2,1,-1],[4,-3,2]] Find A^-1

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