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**BQ#7: Deriving the Difference Quotient**

http://www.analyzemath.com/calculus/Differentiation/difference_quotient_1.gif The formula for the difference quotient comes from the original, algebraic equation for the slope of the line. When trying to find the slope of a tangent line (one intersection),...

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**BQ#2: Unit T: Introduction to Trig Graphs**

Trig graphs are similar to the Unit Circle in the sense that they both possess the values of the quadrants. The period for sine and cosine is 2π because the sign of the function changes with every two quadrants. The period for tangent and cotangent is π bec...

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**SP#7: Unit Q Concept 2: Findig all Trig Functions When Given One Trig Function & Quadrant**

http://www.efunda.com/math/trig_functions/images/trig_relation.gif

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