Representing complex numbers

Which equation represents the polar graph?

• r = 6 + 6 sin θ
• r = 12 sin θ
• r = 4 - 3 sin θ
• r = 4 + 5 sin θ

What side is the blue line showing?

• Curved Side

• Blocked Side

• Initial Side

• Terminal Side

Write the expression in the standard form a + bi.
[3(cos80 +isin80)]³

• -27/2 - (27√3)/2 i
• 27/2 + (27√3)/2 i
• 9/2 + 3i
• 27i + √3

• circle

• cardioid

• rose

• spiral of Archimedes

Find z/w. Leave your answer in polar form.
z=cos120 +isin120
w=cos100 +isin100

• cos20 +isin20
• cos220 + isin220
• cos20 -isin20
• 2(cos220 +isin220)

-3-3i is written in _________.

• POLAR FORM

• RECTANGULAR FORM

• -i

• -1

• i

• 1

 $-\sqrt{7}-i\sqrt{7}$  Write in trig form

•  $\sqrt{14}\left(\cos135+i\sin135\right)$  

•  $\sqrt{14}\left(\cos45\ +\ i\sin45\right)$  

•  $\sqrt{14}\left(\cos315\ +\ i\sin\ 315\right)$  

•  $\sqrt{14}\left(\cos225\ +\ i\sin225\right)$  

Find the polar coordinates of R(-5, -7).

• (8.60, 0.95)

• (4.90, 4.09)

• (4.90, 0.95)

• (8.60, 4.09)