• A. সামান্তরিক
• B. রম্বস
• C. ট্রাপিজিয়াম
• D. আয়তক্ষেত্র

Answer: Option D

Explanation:

• A. $2$
• B. $\frac{2}{\sqrt{3}}$
• C. $4$
• D. $2\sqrt{3}$

Answer: Option D

Explanation:

• A. ৯০ ডিগ্রী
• B. ৬০ ডিগ্রী
• C. ৩০ ডিগ্রী
• D. ১২০ ডিগ্রী

Answer: Option A

Explanation:

• A. $১০০°$
• B. $৯০°$
• C. $৮০°$
• D. $৬৫°$

Answer: Option C

Explanation:

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

Answer: Option B

Explanation:

• A. $-\frac{1}{2}\left(x+\frac{1}{x^2}\right)$
• B. $\frac{1}{2}\left(x-\frac{1}{x^2}\right)$
• C. $\frac{1}{2}\left(x^2+\frac{1}{x^2}\right)$
• D. $\frac{1}{2}\left(\frac{1}{x^2}-x\right)$

Answer: Option D

Explanation:

• A. $\frac{1}{b}-\frac{1}{a}$
• B. $\frac{1}{a}-\frac{1}{b}$
• C. $\frac{1}{a}+\frac{1}{b}$
• D. $-\frac{1}{a}-\frac{1}{b}$

Answer: Option A

Explanation:

• A. $-1$
• B. $1/2$
• C. $0$
• D. $1$

Answer: Option B

Explanation:

• A. $0°$
• B. $30°$
• C. $45°$
• D. $60°$

Answer: Option D

Explanation:

• A. $-\sin \theta$
• B. $\sin \theta$
• C. $\pm \sin \theta$
• D. কোনোটিই নয়

Answer: Option A

Explanation:

• A. $-\sin \theta$
• B. $\sin \theta$
• C. $\pm \sin \theta$
• D. কোনোটিই নয়

Answer: Option A

Explanation:

• A. $\frac{5}{12}$
• B. $\frac{12}{5}$
• C. $\frac{13}{5}$
• D. $\frac{13}{5}$

Answer: Option C

Explanation:

• A. $3/4$
• B. $5/12$
• C. $12/13$
• D. $5/13$

Answer: Option B

Explanation:

• A. $\sqrt{8}$
• B. $3$
• C. $\sqrt{3}$
• D. $8$

Answer: Option B

Explanation:

• A. 0°
• B. 30°
• C. 45°
• D. 60°

Answer: Option B

Explanation: