Higher Math 1st Paper MCQ-Mymensingh Board-2022

1. The polar equation $r-4=0$ represents

2. Area of the region bounded by the circle $x^{2}+y^{2}=1$ is -

3. $\frac{d}{d x}\left(2^{x}\right)=\text { what? }$

4. If $\tan \theta=\frac{1}{2}$, then what is the value of $\sin 2 \theta ?$

5. If the order of matrices $A, B$ and $C$ are $3 \times 4,4 \times 5$ and $5 \times 2$ respectively then, which is the order of (AB)C?