Convert the Cartesian equations to polar form:
a. x^2=4y b. x^2-y^2=1 c. y=2x-1
I know the conversion formulas: r=sqroot(x^2+y^2) and theta= tan^-1(y/x)
but I keep getting weird answers...I'm in a hurry so please help??!!
P.S What I mean by tan^-1 is basically tan-1(u know the inverse of tan)

Question

Convert the Cartesian equations to polar form: 
a. x^2=4y b. x^2-y^2=1 c. y=2x-1 
I know the conversion formulas: r=sqroot(x^2+y^2) and theta= tan^-1(y/x)
but I keep getting weird answers...I'm in a hurry so please help??!! 
P.S What I mean by tan^-1 is basically tan-1(u know the inverse of tan)

tkhunny · Answer

Well, you should do it.  I'm not sure I ever would use that inverse tangent substitution.  Maybe that's why your answers look funny.

Try just $x = r\cos(\theta)\;and\;y = r\sin(\theta)$

p0sitr0n · Answer

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