`[[cos theta,-sin theta],[sin theta,cos theta]]=0`

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]]

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

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

Find the inverse of A=[[cos theta,-sin theta,0sin theta,cos theta,00,0,1]]

The multiplicative inverse of A = [(cos theta,-sin theta),(sin theta,cos theta)]is

A = [(cos theta,-sin theta),(-sin theta,-cos theta)] then find A^(-1) .

Let A=[(cos theta, -sin theta),(- sin theta,-cos theta)] then the inverse of a is

If f(theta)=[(cos theta, -sin theta,0),(sin theta, cos theta, 0),(0,0,1)] then {f(theta)^(-1)} is equal to

If the matrix [{:(cos theta,sin theta,0),(sin theta,cos theta,0),(0,0,1):}] is singular, then what is one of the values of theta ?