PC Unit 7 Test Corrections

Convert the polar coordinates to rectangular form  $\left(\sqrt{2},\ -\frac{\pi}{4}\right)$  

• (1, 1)

• (1, -1) 

• (-1, 0)

• (-1, -1)

Convert the polar coordinates to rectangular form  $\left(6,\ \frac{2\pi}{3}\right)$  

• ( -3, 3)

• (3, 3√3)

• (-3, 3√3)

• (3, -3√3)

Covert the rectangular equation to polar form  $y=x^2$  

• r = cot θ csc θ

• r = tan θ csc θ

• r = tan θ sec θ

• r = 0

Which point represents (3, 3π/4)

• F
• E
• B
• A

Which point represents the polar coordinate
(-4, -2π/3)

• B
• F
• D
• A

True or False: Polar Coordinates are unique?

• True

• False

Which point represents (5, π)

• F
• E
• B
• A

What is the equation?

• Θ = π/4

• Θ = -5π/4

• Θ = -3π/4

• Θ = 5π/4

What is the equation?

• r = 4

• r = 8

• r = 4sin(Θ)

• r = 8sin(Θ)

Find the point based on the parametric equations. t = 3

x = 1 - 2t

y =4t + 1

• (-5, 13)

• (13, -5)

• (5, 13)

• (13, 5)