If A is an orthogonal matrix, then |A| is

If A is a orthogonal matrix, then

If A is a orthogonal matrix, then

If A is an orthogonal matrix then find |A|.

If A is an orthogonal matrix, then A^(-1) equals

If A is an orthogonal matrix , then A^(-1) equals :

Assertion (A) : The matrix [(cosalpha,sinalpha),(-sinalpha,cosalpha)] is an orthogonal matrix. Reason (R) : If A is an orthogonal matrix then A A^(T)=A^(T)A=I

If A is an orthogonal matrix then A^(-1) equals a. A^T b. A c. A^2 d. none of these

If A is an orthogonal matrix then A^(-1) equals A^(T) b.A c.A^(2) d.none of these