Help TI-84 CONICS App is Giving Trig Formulas

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kstrickland06
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TI-84 HELP!
The formulas under the CONICS app keeps converting into trig... It saying a circle is
x=rcos(T) + H instead of (x-h)^2 + (y-k)^2 = r^2
How do I get the 'normal' formulas back?
PLEASE HELP!
 
on Phys.org

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