Amelia Practice

Determine the direction and magnitude of the vector 〈7,18〉

• Direction 21.3°
  Magnitude 19.3
• Direction 68.7°
  Magnitude 19.3
• Direction 21.3°
  Magnitude 373
• Direction 68.7°
  Magnitude 373

Determine the components of the vector:

• <5, 8.7>

• <8.7, 5>

• <59.1, 10.4>

• <10.4, 59.1>

If w = <2, -5> and y = <2, 0>, find 2w + y

• <-10, 2>

• <4, -5>

• <-6, 10>

• <6, -10>

Convert the rectangular coordinate (0, -3) to polar coordinates.

• (3, -270^o)
• (3, 270^o)
• (-3, 270^o)
• Not Possible

Change the following polar coordinate into a rectangular coordinate: [ 4 , 125^o]

• (-2.3 , 3.3)

• (2.3 , 3.3)

• (-3.3 , 2.3)

• (-3.2 , 2.5)

(-2 , -6) would be what polar coordinate?

• [6.3 , 71.6°]

• [-6.3 , 71.6°]

• [6.3 , 251.6°]

• [-6.3 , 251.6°]

Convert the rectangular equation to a polar equation. 
x²+y²=25

• r=5
• r=5sinΘ
• r=5cscΘ
• r=25

What is the function of the graph?

• r=3
• r=3sinΘ
• r=3sinΘ+3cosΘ
• r=3cosΘ

Write the polar equation into a rectangular equation?
r=sinΘ

• x²+y²=y
• y=x²
• 1=x²+y²
• x²+y²=2x+2y

Write the polar equation into a rectangular equation?
r=2sinΘ+2cosΘ

• x²+y²=2x+2y
• r=2x+2y
• r=x²+y²
• x²-y²=2x-2y