## Precalculus with Unit-circle TrigonometryPrecalculus with Unit-Circle Trigonometry, Third Edition, by David Cohen continues to create a book that is accessible to the student through a careful progression and presentation of concepts, rich problem sets and examples to help explain and motivate concepts, and continual guidance through the challenging work needed to master concepts and skills. This book is identical to Precalculus: A Problems-Oriented Approach, Fifth Edition with the exception of the first four chapters on trigonometry. |

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algebra amplitude angle answer approximation asymptote box that follows complete the following completing the square coordinates cosine curve deﬁned denote determine distance domain estimate evaluate EXAMPLE exponential function Express the area factor ﬁgure ﬁmction ﬁnd ﬁrst fixed point following table formula function f given equation Graph the function graphing utility half-life Hint identity inequality input interval inverse function iterates of x0 length Let f(x line segment linear function logarithms maximum negative output parabola period polynomial population positive Pythagorean theorem quadratic equation quadratic formula quadratic function quantity radian measure radius rate of change real numbers reference reﬂection result right triangle root Round Section shown in Figure simple harmonic motion sketch the graph slope solution set square Suppose symmetry tangent three decimal places translate trigonometric functions unit circle vertex vertical viewing rectangle x-axis x-coordinate x-values y-axis y-direction y-intercept yields