A Circle of Ideas
As we have seen, near the end of Chapter 5, the fundamental theorem of calculus veils her face with a circle. In this chapter we shall see that all of trigonometry hides behind a circle, as well. According to Plato, Dante, and many others, the circle is the most perfect figure. It is surely rich in ideas.
KeywordsUnit Circle Inverse Function Tangent Line Chain Rule Central Angle
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