Circle Maths - Circle

• ✓
  $x=\frac{-m}{2}+\frac{m}{\sqrt{2}} \cos \theta_i y=\frac{-m}{2}+\frac{m}{\sqrt{2}} \sin \theta$
  
• B
  $x=\frac{-m}{2}+\frac{m}{\sqrt{2}} \cos \theta_2 y=\frac{+m}{2}+\frac{m}{\sqrt{2}} \sin \theta$
  
• C
  x = 0, y = 0
• D
  x = m cos θ, y = m sin θ

Answer: A.

• A
  $\frac{2}{\sqrt{3}}-\frac{\pi}{6}$
  
• ✓
  $\sqrt{3}-\frac{\pi}{3}$
  
• C
  $\frac{\pi}{3}-\frac{\sqrt{3}}{6}$
  
• D
  $\sqrt{3}\left(1-\frac{\pi}{6}\right)$
  

Answer: B.

• A
  $x^2+y^2=9 a^2$
  
• B
  $x^2+y^2=16 a^2$
  
• ✓
  $x^2+y^2=4 a^2$
  
• D
  $x^2+y^2=a^2$
  

Answer: C.

• A
  $\left(\frac{-a}{2}, \frac{-b}{2}\right)$
  
• B
  $\left(\frac{a}{2}, \frac{-b}{2}\right)$
  
• C
  $\left(\frac{-a}{2}, \frac{b}{2}\right)$
  
• ✓
  $\left(\frac{a}{2}, \frac{b}{2}\right)$
  

Answer: D.

• A
  5π
• B
  10π
• ✓
  25π
• D
  100π

Answer: C.