If `A=[(cos alpha,sin alpha),(-sin alpha,cos alpha)]` and A. adj `A=[(k,0),(0,k)]` , then k is equal to

A=[[Cos alpha,sin alpha],[-Sin alpha,cos alpha]] then A^(2)

A=[[cos alpha,sin alpha],[-sin alpha,cos alpha]] , then find | A |

If A = [(cos alpha,sin alpha),(-sin alpha,cos alpha)] , then A^(10) = .........

If A(alpha, beta)=[("cos" alpha,sin alpha,0),(-sin alpha,cos alpha,0),(0,0,e^(beta))] , then A(alpha, beta)^(-1) is equal to

If A=[(cos alpha, -sin alpha, 0),(sin alpha, cos alpha,0),(0,0,1)] then A^(-1) is

If A_(alpha), = [{:(cos alpha , sin alpha),(-sin alpha , cos alpha):}] , then

If A=[{:(cos alpha, sin alpha),(-sin alpha, cos alpha):}] , then what is A"A"^(T) equal to (where A^(T) is the transpose of A) ?