• A. $\sin \theta$
• B. $-\sin \theta$
• C. $\cos \theta$
• D. $-\cos \theta$

Answer: Option C

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

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. $\frac{5}{12}$
• B. $\frac{12}{5}$
• C. $\frac{12}{7}$
• D. $\frac{13}{12}$

Answer: Option B

Explanation:

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

Answer: Option B

Explanation:

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

Answer: Option A

Explanation:

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

Answer: Option D

Explanation:

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

Answer: Option B

Explanation:

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

Answer: Option B

Explanation:

• A. ৫/৩
• B. ৩/৫
• C. ৪/৩
• D. ৪/৫

Answer: Option B

Explanation:

• A. $x$
• B. $y$
• C. $\frac{1}{x}$
• D. $\frac{1}{y}$

Answer: Option A

Explanation:

• A. $\frac{3}{5}$
• B. $\frac{24}{26}$
• C. $\frac{24}{25}$
• D. $\frac{9}{10}$

Answer: Option C

Explanation: