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

Answer: Option C

Explanation:

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

Answer: Option A

Explanation:

• A. $\frac{1}{25}$
• B. $-5$
• C. $\frac{1}{5}$
• D. $-\frac{1}{5}$

Answer: Option B

Explanation:

• A. $1$
• B. $4$
• C. $2$
• D. $5$

Answer: Option B

Explanation:

• A. ${30}^{°}$
• B. ${60}^{°}$
• C. ${75}^{°}$
• D. ${70}^{°}$

Answer: Option B

Explanation:

• A. $4$
• B. $5$
• C. $8$
• D. $10$

Answer: Option A

Explanation:

• A. 1
• B. 2
• C. 3
• D. 4

Answer: Option B

Explanation:

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

Answer: Option D

Explanation:

• A. 25
• B. 15
• C. 5
• D. 10

Answer: Option B

Explanation:

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

Answer: Option B

Explanation:

• A. $2$
• B. $\pm 2$
• C. $4$
• D. $10$

Answer: Option A

Explanation:

• A. $32$
• B. $8$
• C. $3$
• D. $\sqrt{8}$

Answer: Option A

Explanation:

• A. $-6$
• B. $6$
• C. $-\frac{1}{6}$
• D. $\frac{1}{6}$

Answer: Option A

Explanation:

• A. $a>0$
• B. $a \mathrm{Not}=1$
• C. $a>0,a \mathrm{Not}=1$
• D. $a \mathrm{Not}=1,a>2$

Answer: Option C

Explanation:

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

Answer: Option D

Explanation: