Tuesday

September 23, 2014

September 23, 2014

Posted by **Laila** on Wednesday, July 30, 2014 at 11:05am.

What is the polar equation that is equivalent to the rectangular equation?

- PreCalculus -
**Laila**, Wednesday, July 30, 2014 at 11:06amSorry it's actually equal to 1 not 0

- PreCalculus -
**Steve**, Wednesday, July 30, 2014 at 3:25pmjust make the usual substitution.

y = rsinθ

x = rcosθ

so, that means

r^2sin^2θ/25 - r^2cos^2θ/9 = 1

r^2(9sin^2θ-25cos^2θ) = 225

r^2 = 225/(9sin^2θ-25cos^2θ)

see the expected vertical hyperbola at

http://www.wolframalpha.com/input/?i=plot+r^2+%3D+225%2F%289sin^2%CE%B8-25cos^2%CE%B8%29

**Answer this Question**

**Related Questions**

precalculus - 5x+3y=8 convert each rectangular equation to polar form Convert ...

precalculus - convert the equation y^2 = 2x -x^2 into polar form. convert the ...

Pre-calculus; urgent ! Please help ! - 1.Graph the polar equation r=3-2sin(theta...

Calculus please help ! - 1.Graph the polar equation r=3-2sin(theta) 2. Find the ...

Math ! Please Help ! - 1.Graph the polar equation r=3-2sin(theta) 2. Find the ...

PRECALCULUS HELP PLEASE! - convert the polar equation to rectangular form. 1.) ...

Precalculus - Write the rectangular equation (x+7)^+y^=49 in polar form.

precalculus - covert the rectangular equation to polar form x2+(y+2)2=4

PRECALCULUS - convert the polar equation to rectangular form. 1.) r sec(theta...

Precalculus - how do you put the polar equation r^2(sin2u)=6 into rectangular ...