A=[[cos theta,sin theta],[-sin theta,cos theta]]

Find the matrix A , when A^(-1) = [[cos theta, sin theta],[-sin theta,cos theta]]

By matrix multiplication from that M=[[cos theta,-sin theta],[sin theta,cos theta]] is orthogonal.

If E(theta)=det[[cos theta,sin theta-sin theta,cos theta]], then |E^(3)(theta)|=

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

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

Evaluate |[cos theta, -sin theta], [sin theta, cos theta]|

Find the matrix A when A^(-1) = [(cos theta,sin theta),(-sin theta,cos theta)] .

Find the adjoint of each of the following matrices: [(cos theta, sin theta),(-sin theta, cos theta)]

Verify that [(cos theta, sin theta),(-sin theta, cos theta)] and [(cos theta, - sin theta),(sin theta, cos theta)] are inverse of each other.