`|(cos theta ,sin theta ),(sin theta ,cos theta)|=?`

If cos2theta=0 , then |(0,costheta,sin theta),(cos theta, sin theta, 0),(sin theta, 0, cos theta)|^(2) is equal to…………

Find A^(-1) using adjoint method, where A = [(cos theta,sin theta),(-sin theta,cos theta)]

Find the distance between the points : (cos theta, sin theta), (sin theta, cos theta)

Prove the orthogonal matrices of order two are of the form [(cos theta,-sin theta),(sin theta,cos theta)] or [(cos theta,sin theta),(sin theta,-cos theta)]

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