Convertong polar equations to rectangular eq.

[catteyes]

Homework Statement

(theta)= 45Degrees

Homework Equations

(theta)= Arctan(y/x) (x>0)
(theta)= Arctan(y/x) (x<0)

The Attempt at a Solution

Tan(45)=y/x
1 = y/x
Does that mean Y = X?

 

[HallsofIvy]

Homework Statement

(theta)= 45Degrees

Homework Equations

(theta)= Arctan(y/x) (x>0)
(theta)= Arctan(y/x) (x<0)

The Attempt at a Solution

Tan(45)=y/x
1 = y/x
Does that mean Y = X?

Yes, it does! If you are not convinced, draw an xy- coordinate system, mark the line at 45 degrees to the positive x-axis and draw the line y= x!

 

[arildno]

What angle to the positive x-axis does the line y=x make?

 

[catteyes]

oh 45 degrees.

thanks