1
COMEDK 2025 Morning Shift
MCQ (Single Correct Answer)
+1
-0
For two matrices $A$ and $B$, given that $A^{-1}=\frac{1}{8} B$ then inverse of $(8 A)$ is
A
$\frac{1}{8} B$
B
8 B
C
$\frac{1}{64} B$
D
  B
2
COMEDK 2025 Morning Shift
MCQ (Single Correct Answer)
+1
-0
Distance of the point $(-2,3)$ from the line $12 x-5 y-2=0$ is $\frac{41}{k}$. Then the value of $k$ is
A
$\sqrt{134}$
B
$\sqrt{13}$
C
13
D
1
3
COMEDK 2025 Morning Shift
MCQ (Single Correct Answer)
+1
-0
If $\sin A+\sin B=-\frac{21}{65}, \cos A+\cos B=-\frac{27}{65}$ and $\pi
A
$\frac{3}{\sqrt{130}}$
B
$\frac{6}{65}$
C
$-\frac{6}{65}$
D
$-\frac{3}{\sqrt{130}}$
4
COMEDK 2025 Morning Shift
MCQ (Single Correct Answer)
+1
-0
If $A=\left[\begin{array}{ccc}0 & 1 & -2 \\ -1 & 0 & 3 \\ 2 & -3 & 0\end{array}\right]$ then $A^{-1}$
A
equal to $-\frac{1}{12}(\operatorname{adj} A)$
B
equal to $-$12
C
equal to $\frac{1}{12}(\operatorname{adj} A)$
D
doesn't exit
EXAM MAP