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

A=[[cos alpha,sin alpha],[-sin alpha,cos alpha]] find [A^(2)(alpha)]^(-1)

If A(alpha)=[[cos alpha,sin alpha],[-sin alpha,cos alpha]] then A(alpha)A(beta)

Let alpha=(pi)/(5) and A,=[[cos alpha,sin alpha-sin alpha,cos alpha]] then B=A^(4)-A^(3)+A^(2)-A is

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

If A=[[cosalpha, sin alpha] , [-sin alpha, cos alpha]] and A^(-1)=A' then alpha=

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

If A=[[cosalpha, -sin alpha] , [sin alpha, cos alpha]] then A+A'=I then alpha=

If A,=[[cos alpha,sin alpha-sin alpha,cos alpha]] then show that ,A^(2)=[[cos2 alpha,sin2 alpha-sin2 alpha,cos2 alpha]]

If A,=[[cos alpha,sin alpha-sin alpha,cos alpha]] is such that A^(T),=A^(-1), find alpha