If `A=1/3[1 2 2 2 1-2a2b]` is an orthogonal matrix, then `a=-2` b. `a=2,b=1` c. `b=-1` d. `b=1`

If A=1/3|[1, 2, 2], [2, 1,-2],[a,2,b]| is an orthogonal matrix, then a=-2 b. a=2,b=1 c. b=-1 d. b=1

If A=1/3|[1, 2, 2], [2, 1,-2],[a,2,b]| is an orthogonal matrix, then a=-2 b. a=2,b=1 c. b=-1 d. b=1

If A=1/3{:[(1,2,2),(2,1,-2),(a,2,b)]:} is an orthogonal matrix, then

If A = (1)/(3) [(1,2,2),(2,1,-2),(a,2,b)] is an orthogonal matrix, then a)a = - 2, b = - 1 b)a = 2, b = 1 c)a = 2, b = - 1 d)a = - 2, b = 1

If A=(1)/(3)[[1,2,22,1,-2a,2,b]] is an orthogonal ,b=-1 d.b=1

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

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