Higher Math 1st Paper MCQ-Dhaka Board-2023

1. Which one is the slope of the line $q y+p x+r=0$ ?

2. What is the length of the intercept of $y$-axis by the circle$2 x^{2}+2 y^{2}-2 x-4 y- 22=0$ ?

3. $\cos \frac{A}{2}=$ what?

4.

$\left|\begin{array}{rr}1 & 2 \\ -3 & 6\end{array}\right|$ is a determinant-

i. the cofactor of $(1,2)^{\text {th }}$ entry is 3

ii. the minor of $(2,2)^{\text {th }}$ entry is 1

iii. the value of determinant is 12

Which one is correct?

5. Which one is the perpendicular distance of the line $A B$ from the point $(-1,-2)$ ?