`|[cos a,-sin a],[sin a,cos a]|`

|[cos x,sin x],[sin x,cos x]|

if A=[[cos a,sin a-sin a,cos a]] then find A^(-1)

if A + A ' = I ,then find the value of x , if A = [[ cos x, − sin x],[ sin x, cos x ] ]

Find the value of |[cos theta,-sin theta],[sin theta,cos theta]|

If A=[(cos x, sin x),(-sin x,cos x)] , then A(adj A)=

" (1) "|[cos theta,-sin theta],[sin theta,cos theta]|

If A= [[cos theta,-sin theta],[sin theta,cos theta]] ,then Adj A is (a) [[cos theta,-sin theta],[cos theta,sin theta]] (b) [[1,0],[0,1]] (c) [[cos theta,sin theta],[-sin theta,cos theta]] (d) [[-1,0],[0,-1]]

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

A_((alpha))=[{:(cos alpha,-sin alpha),(sin alpha,cos alpha):}],A_((beta))=[{:(cos beta,-sin beta),(sin beta,cos beta):}] Which one of the following is correct ?

Evaluate ,,,|cos alpha cos beta,cos alpha sin beta,-sin alpha-sin beta,cos beta,0sin alpha,cos beta,sin alpha sin beta,cos alpha]|