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If A= [(cos theta, sin theta),(-sin thet...

If A= `[(cos theta, sin theta),(-sin theta, cos theta)]` and A (adj A) = `[(k,0),(0,k)]` then k =

A

0

B

sin `theta`

C

cos `theta`

D

1

Text Solution

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The correct Answer is:
D
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Knowledge Check

  • If A = [{:(costheta, sin theta),(-sin theta, cos theta):}] and A(adj A) = [{:(k,0),(0,k):}] , then k=……………

    A
    0
    B
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  • If A=[{:(cos theta, sin theta),(-sin theta, cos theta):}] then "A A"^(T) is :

    A
    A
    B
    `A^(T)`
    C
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    D
    0

  • ((cos theta+isin theta)^4)/((sin theta+icos theta)^5)=?

    A
    `cos theta-isin theta`
    B
    `sin theta- icos theta`
    C
    `cos 9theta - isin 9theta`
    D
    `sin 9theta - icos 9theta`

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