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I: If the matrix A=[(8,-6,2),(-6,7,-4),(...

I: If the matrix A`=[(8,-6,2),(-6,7,-4),(2,-4,lamda)]` is singular one, then `lamda=3`
II: If the matrix `[(cos theta, sin theta, 0),(sin theta, cos theta, 0),(0,0,1)]` is singular then `theta=pi//2`

A

only I is true

B

only Ii is true

C

both I and II are true

D

neither I nor II true

Text Solution

Verified by Experts

The correct Answer is:
A
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