• A. $\tan z^2\theta$
• B. $2 {\cos }^2\frac{\theta }{2}$
• C. $2 \sin \theta \cos \theta$
• D. $\cos 2\theta$

Answer: Option C

Explanation:

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

Answer: Option C

Explanation:

• A. $60°$
• B. $50°$
• C. $30°$
• D. $45°$

Answer: Option A

Explanation:

• A. $2\pi r^2$
• B. $4\pi$
• C. $2\pi r$
• D. $4\pi r$

Answer: Option D

Explanation:

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

Answer: Option C

Explanation:

• A. 2
• B. $2^{n+1}$
• C. $2^n$
• D. $2^{n-1}$

Answer: Option A

Explanation:

• A. $2$
• B. $2^n$
• C. $4$
• D. $2^{n+1}$

Answer: Option B

Explanation:

• A. 2
• B. 4
• C. 6
• D. 7

Answer: Option C

Explanation:

• A. 2
• B. 100
• C. 37
• D. 4.6

Answer: Option A

Explanation:

• A. $-7$
• B. $7$
• C. $0$
• D. $11$

Answer: Option C

Explanation:

• A. 10
• B. 9
• C. 8
• D. 12

Answer: Option C

Explanation:

• A. 30°
• B. 45°
• C. 60°
• D. 120°

Answer: Option B

Explanation:

• A. 60°
• B. 45°
• C. 30°
• D. 40°

Answer: Option B

Explanation:

• A. $2$
• B. $1$
• C. $3$
• D. $5$

Answer: Option A

Explanation:

• A. ${\left(a+b\right)}^2-{\left(a-b\right)}^2$
• B. ${\left(a-b\right)}^2-{\left(a+b\right)}^2$
• C. ${\left(a+b\right)}^2+{\left(a-b\right)}^2$
• D. ${\left(a+b\right)}^2-4ab$

Answer: Option C

Explanation: