What is a cardioid curve?

1 Answer
Mar 23, 2016

Please see below


Cardioid curve is some thing like a heart shaped figure (that is how the word 'cardio' has come). It is the locus of a point on the circumference of a circle that moves on another circle without slipping.

Mathematically it is given by the polar equation #r=a(1-costheta)#, at times also written as #r=2a(1-costheta)#,

It appears as shown below.

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