Precalculus with unit-circle trigonometry
Precalculus 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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AABC aﬁer algebra angle answer asymptote axes box that follows calculator coefﬁcients completing the square complex numbers compute coordinates cosine curve deﬁned deﬁnition denote determine directrix distance domain ellipse EXAMPLE EXERCISE SET exponential expression factor ﬁgure shows ﬁmction ﬁnal ﬁnd Find the equation ﬁrst ﬁxed point following ﬁgure formula function f given equation Graph the function graphing utility Hint hyperbola identity inequality input intersect interval inverse iterates last equation law of cosines law of sines length line segment linear logarithms mathematical induction Mathematics matrix multiply natural numbers notation obtain parabola parametric equations perpendicular polar polynomial positive quadratic equation quantity radian radius real numbers reﬂection result right triangle roots Round shown in Figure sides sine slope Solution square symmetry tangent theorem trigonometric functions unit circle vector verify vertical viewing rectangle x-axis x-coordinate x-intercept y-axis yields zero