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If the area of a triangle with vertices ...

If the area of a triangle with vertices `(-3,0),(3,0)` and `(0,0` is 9 sq. units. Then the value of `k` will be

A

`9`

B

`3`

C

`-9`

D

`6`

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The correct Answer is:
B
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  11. If A is a sqaure matrix of order 3xx3 and |A|=5, then |adj.A| is

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  12. The value of 'x' for which |{:(3,x),(x,1):}|=|{:(3,2),(4,1):}| is

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  13. Evalute the determinants in queations 1 and 2 : If |{:(x,2),(18,x):}...

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  14. If A is a matrix of order 3xx3 and |A|=10 , then |adj.A| is

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  15. If A is an invertible matrix of order 2, then det (A^(-1))is equal to...

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  20. If determinant A is order 2xx2 and |A|=3, then the value of |2A| is

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