• A. $0$
• B. $\frac{1}{2}$
• C. $\frac{-1}{\sqrt{2}}$
• D. $\frac{\sqrt{3}}{2}$

Answer: Option C

Explanation:

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

Answer: Option D

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

Answer: Option D

Explanation:

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

Answer: Option A

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. ${\tan }^{-1}\frac{2}{11}$
• B. ${\tan }^{-1}\frac{32}{11}$
• C. ${\tan }^{-1}\frac{11}{2}$
• D. $-{\tan }^{-1}\frac{2}{11}$

Answer: Option C

Explanation:

• A. -2
• B. - 2x
• C. π - 2x
• D. 4 - 4x

Answer: Option B

Explanation:

• A. $5$
• B. $50$
• C. $25$
• D. $0.5$

Answer: Option C

Explanation:

• A. $\frac{2}{3}$
• B. $\frac{\sqrt{5}}{2}$
• C. $\frac{5}{4}$
• D. $1$

Answer: Option B

Explanation:

• A. $\frac{1}{\sqrt{3}}$
• B. $\frac{1}{\sqrt{5}}$
• C. $\sqrt{3}$
• D. $\sqrt{5}$

Answer: Option A

Explanation:

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

Answer: Option D

Explanation:

• A. $\frac{5}{7}$
• B. $\frac{3}{7}$
• C. $\frac{3}{5}$
• D. $\frac{1}{5}$

Answer: Option A

Explanation:

• A. $9/4$
• B. $2/5$
• C. $3$
• D. $25/4$

Answer: Option B

Explanation: