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How do you convert $(- 2, 0)$ $( -2 , 0 )$ into polar coordinates?

1 Answer

Feb 24, 2016

$(r, θ) = (2, π)$ $(r,theta)=(2,pi)$

Explanation:

It is possible to use the conversions:
$XXX r = \sqrt{x^{2} + y^{2}}$ $color(white)("XXX")r=sqrt(x^2+y^2)$
and
$XXX θ = arcsin (\frac{x}{r})$ $color(white)("XXX")theta= arcsin(x/r)$

but this is easily seen from a diagram:
enter image source here

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