Basic Circle Functions

Topic:Circle, Cosine, Functions, Sine, Tangent Function, Trigonometry

David Joyce is a brilliant visual thinker and representer, and he has this great image at the beginning of his trigonometry short course. See the course at http://www.clarku.edu/~djoyce/trig/

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Graphical solution of ax² + bx + c = k
z`]]
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apec

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