Question

how do I convert x^2-y^2=4 to polar form?

Answer 1

\[ x = r \cos \theta, y = r \sin\theta\]

Answer 2

so how do I know what r and theta are?

Answer 3

let x=rcostheta and y=rsin(thetha)

Answer 4

http://www.wolframalpha.com/input/?i=polar+plot+r^2+%3D+cos%282theta%29

R is the distance at angel theta from origin

Answer 5

oh i see

Answer 6

then take out the common factor r^2, and then u knw that sin^2theta and cos^2theta =1

Answer 7

oh yeah, cool guys thanks a lot i appreciate it

Answer 8

http://www.wolframalpha.com/input/?i=polar+plot+r^2+%3D+2%2Fcos%282theta%29

Answer 9

ok cool man thank you