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Polar to rectangular

  1. Dec 22, 2015 #1
    I need an android calculator app that will convert between rectangular and polar. I need these keys: ->R and ->P
  2. jcsd
  3. Dec 22, 2015 #2
    Why do you need an app?

    If you have (x,y), to get (r,a) just do:
    r = sqrt(x^2 + y^2)
    a = arctan(y/x)

    If you are in (r,a), to get to (x,y), just do:
    x = r*cos(a)
    y = r*sin(a)
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