A cliché American sees me as tasty treat
But I sound like a bull, one you can not eat
A locus is rotated outside the axis in question
Finding my values is such a calculus impression
Name the mathematical concept
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torus.
A cliché American sees me as tasty treat
Do(ugh)nut.
But I sound like a bull, one you can not eat
Taurus.
A locus is rotated outside the axis in question
A torus is a surface of rotation, obtained by rotating a circle about an axis that doesn't pass through the circle.
Finding my values is such a calculus impression
I'm not sure exactly what this means, though there are plenty of things that involve both tori and calculus.