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You are here: Home / Category Index / Circles / Parametric Equations Of A Circle
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Parametric Equations Of A Circle - By Kader Mula
How to use this applet:This applet is mainly self-explanitory,
however one must bear in mind a few points
in order to use it properly:
INSTRUCTIONS
(1)Write all text WITHOUT spaces.
(2)To 'divide by' use the forward slash "/"
EG divide 3-4 by 5 = (3-4)/5
(3)You must square out all numbers but
can avoid squaring out full expressions
EG square 2 = 4
EG square 3-x = (3-x)s
Where ( )s represents whatever is in the brackets squared
(4)To represent the square root of something
use the "sq( )" notation, where whatever is in the
bracket is what is to be square rooted.
EG square root of 5 = sq(5),
square root of x-6 = sq(x-6).Notes on the maths used in the applet:This applet teaches how to convert,
the parametric equations of a circle in the
trigonometry form:
EG
x = 6 + 3 Cos(a),
y = 2 + 3 Sin(a)
to the Cartesian equation of a circle
in the form:
(x-h)s+(y-k)s=(R)s
.Where ( )s means squared,
R represents the radius of the circle and
h and k represent the co-ordinates of the centre
of the circle.
Other useful information: In order to learn from this applet,
it is advisable to avoid using the "Answer"
button, as this was intended only as a
last resort!
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