polar and cartesian

From: "vicky" <vikash.vks123@xxxxxxxxx>
Date: 11 Sep 2006 21:06:58 -0700

Friends
As we knowrelation between poler and cartesian co-ordinates are
x=r*cos(t) -------(1) // sorry i
use t for angle theta//
y=r*sin(t) --------(2)
r ^2= x^2+y^2 -------(3)
t= tan^-1(y/x) -------(4)

By equation (1) x_r = cos(t) ----(5)
By equation (3) differentiating w.r.to r we get
x_r= sec(t) -------(6)

why?

.

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Re: polar and cartesian
... As we knowrelation between poler and cartesian co-ordinates are ... use t for angle theta// ...
(sci.math)
Re: polar and cartesian
... As we knowrelation between poler and cartesian co-ordinates are ... use t for angle theta// ... By equation differentiating w.r.to r we get ...
(sci.math)