2. (i) \(\begin{vmatrix}cosθ & -sinθ \\ sinθ & cosθ\end{vmatrix}\)

(ii) \(\begin{vmatrix}x^2-x+1 & x-1 \\ x+1 & x+1\end{vmatrix}\)

Determinants

Exercise 4.1

Ncert Solutions class 12 chapter 4 exercise 1 question 2