• A. 1
• B. -1
• C. i
• D. -i

Answer: Option C

Explanation:

• A. $\frac{4}{5}$
• B. $\frac{8}{3}$
• C. $\frac{8}{5}$
• D. $\frac{7}{5}$

Answer: Option C

Explanation:

• A. $\sqrt{21}N$
• B. $\sqrt{19}N$
• C. $\sqrt{13}N$
• D. $\sqrt{23}N$

Answer: Option C

Explanation:

• A. $0$
• B. $1$
• C. $\sqrt{2}$
• D. $i$

Answer: Option B

Explanation:

• A. $1$
• B. $\frac{1}{2}$
• C. $\sqrt{3}$
• D. $\frac{1}{\sqrt{3}}$

Answer: Option C

Explanation:

• A. $2\cos ecA$
• B. $2\tan \frac{A}{2}$
• C. $2cotA$
• D. $2secA$

Answer: Option B

Explanation:

• A. $0$
• B. $1$
• C. $-1$
• D. অসংজ্ঞায়িত

Answer: Option B

Explanation:

• A. $2$
• B. $-1$
• C. $0$
• D. $1$

Answer: Option C

Explanation:

• A. $0$
• B. $\frac{1}{2}$
• C. $1$
• D. $-1$

Answer: Option B

Explanation:

• A. $\mathrm{\pi }$
• B. $\infty$
• C. $1‵$
• D. $\varnothing$

Answer: Option C

Explanation:

• A. tan(t / 2)
• B. cot(t / 2)
• C. tan(2 / t)
• D. cot(2 / t)

Answer: Option A

Explanation:

• A. ${\tan }^{-1}\left(\frac{3}{4}\right)$
• B. ${\cos }^{-1}\left(\frac{4}{5}\right)$
• C. ${\sin }^{-1}\left(\frac{5}{3}\right)$
• D. ${\sin }^{-1}\left(\frac{3}{4}\right)$

Answer: Option B

Explanation:

• A. Tk. 5,00,000
• B. Tk. 4,00,000
• C. Tk. 6,00,000
• D. Tk. 8,00,000

Answer: Option D

Explanation:

• A. -5
• B. -3
• C. 5
• D. 3

Answer: Option A

Explanation:

• A. $3x-2y+3=0$
• B. $3x+2y+3=0$
• C. $2x-3y+2=0$
• D. $2x-3y-2=0$

Answer: Option B

Explanation: