More Polar Graphs

Choose a correct equation for the red circle.

• r = -3
• r = -3sinΘ
• r = -3cosΘ
• x² + y² = 3

Choose a correct equation for the blue circle.

• r = 2
• r = 4
• r = 2sinΘ
• x² + y² = 2

Tags

CCSS.HSN.CN.B.4

Identify the polar equation:
r=1+sinθ

• cardioid
• circle
• limacon with inner loop
• spiral

What is the equation?

• Θ = π/4

• Θ = -5π/4

• Θ = -3π/4

• Θ = 5π/4

What does the polar function look like? $r=\theta$  

• a spiral

• a circle

• a line

• a rose

Tags

CCSS.HSN.CN.B.4

How many "petals" does the graph of  $r=8\cos9\theta$  

• 9

• 18

• 8

• 17

Which equation is represented by the graph?

• $r=4\sin5\theta$

• $r=2.5\sin5\theta$

• $r=5\cos4\theta$

• $r=4\cos5\theta$

Tags

CCSS.HSF-IF.C.7D

How many "petals" does the graph of  $r=8\cos10\theta$  

• 16

• 10

• 20

• 8

Which is NOT true about the rose function
 $r=7\sin6\theta$  ?

• Each petals is less than 10 units long

• There are more than 7 petals

• There are fewer than 11 petals

• It is symmetrical about the y-axis

 $r=A\cos n\theta$  Based on the graph shown, find the value of A + n.  (Both A and n are integers)

(a)