Convert the equation to polar form..... Plz explain
#1 x^2+y^2=9
#2 y=5
Convert the polar to rectangular coordinates
#3 r^2=sin2(theta)
#4 r=1/(1+sin(theta))
Use the following to convert:
Polar to rectangular:
$\displaystyle x = r\cos \theta$
$\displaystyle y = r\sin \theta$
Rectangular to polar:
$\displaystyle r = \sqrt{x^2 + y^2}$
$\displaystyle \theta = \tan^{-1} \left(\frac{y}{x}\right)$
So...
#1:
$\displaystyle x^2 + y^2 = 9$
$\displaystyle r^2 = 9$
$\displaystyle r = 3$
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