# Switch to rectangular coordinates please! r=5sin(theta)?

r=5sin(theta)

### 3 Answers

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- Captain MephistoLv 710 years agoFavorite Answer
y = r*sin(T)

We know that r = 5*sin(T) which gives sin(T) = r/5

And r^2 = x^2 + y^2

y = r^2/5 = (x^2 + y^2)/5

y^2 - 5*y + x^2 = 0

y^2 - 5*y + 25/4 - 25/4 + x^2 = 0 .... complete the square for the y terms

(y - 5/2)^2 + x^2 = 25/4

This is just a circle centered at (0, 5/2) with a radius or 5/2

- Anonymous10 years ago
doesn't make sense

doesn't sound like math

it's gibberish!

- Anonymous10 years ago
USE A CALCULATER,THE SMARTTTT ONES

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