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SashulF [63]
4 years ago
8

Convert to rectangular form r=4 cos theta

Mathematics
2 answers:
Amiraneli [1.4K]4 years ago
5 0
Hello,

x=r cos t
y=r sin t
x²+y²=r²

r=4 cos t
r=4x/r==>x²+y²=4x
==>(x-2)²+y²=4 (a circle center (2,0),radius 2)

iren [92.7K]4 years ago
5 0
R^2 = 4r costheta
<span>x= r costheta
</span>y=rsin thta
<span>r^2 = 4x </span>
<span>x^2+y^2 = 4x
  r^2=x^2+y^2 </span>

<span>x^2+y^2=4x </span>
<span>x^2+4x+y^2=0 </span>
<span>x^2-4x+4 +y^2=4 </span>
<span>(x-2)^2+y^2 = 4 </span>
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