Determinants

Bihar Board Class 12 · Mathematics · 70 past questions

6 of 70 · show all

1. Q29 2025 Set E2019 Set F

   Evaluate the determinant $\begin{vmatrix} 4 & 9 & 7 \\ 3 & 5 & 7 \\ 5 & 4 & 5 \end{vmatrix}$.

   Try it →
2. Q53 2019 Set F

   The value of the determinant $\begin{vmatrix} 1 & 2 & 4 \\ 1 & 3 & 6 \\ 1 & 4 & 9 \end{vmatrix}$ is -

   Try it →
3. Q54 2019 Set F

   $\begin{vmatrix}\sin20^\circ & -\cos20^\circ\\ \sin70^\circ & \cos70^\circ\end{vmatrix}=?$

   Try it →
4. Q55 2019 Set F

   Evaluate $\begin{vmatrix} 1 & -1 \\ y & x \end{vmatrix}$

   Try it →
5. Q56 2019 Set F

   Prove that $\begin{vmatrix} \cos 15^\circ & \sin 15^\circ \\ \sin 75^\circ & \cos 75^\circ \end{vmatrix} = 0$

   Try it →
6. Q57 2019 Set F

   Prove that -…

   Try it →