sirragrac40391 sirragrac40391
  • 03-06-2020
  • Mathematics
contestada

find an equation equivalent to r = 10 sin in rectangular coordinates

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Rau7star
Rau7star Rau7star
  • 06-06-2020

Answer:

x²+(y-5)²=25

Step-by-step explanation:

To convert polar into rectagular

[tex]->r=\sqrt{x^2+y^2} =>r^2=x^2+y^2\\[/tex]

also, y=rsin θ => sin θ=y/r

r= 10sinθ

r=[tex]\frac{10y}{r}[/tex] => r²=10y

therefore, x²+y²-10y=0

By completing the squares on y²-10y gives

x²+(y-5)²=25

which is the equation of the circle.

This is the Cartesian equation of a circle with center  ( 0, 5)    

and radius,  r=5  

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