Course Description
MATH 140 covers inverse functions, plane trigonometry, polar coordinates, conic sections and vectors. See detailed objectives.
Circulating Books in KCC Library

Trigonometry For Dummies  Degrees, radians, right triangles, circles, trigonometric identities, inverse trig functions, trigonometric equations, and graphs. Plenty of examples, graphs, and interesting side notes, but no true practice problems. 

Master Math: Trigonometry  Review of numbers, coordinate systems, and geometry. Triangles, circular functions, graphs, inverse trigonometric functions, identities, equations and inequalities, vectors, polar coordinates, parametric equations, complex numbers, spherical trigonometry. Thorough exposition, with examples and graphs, but no practice exercises. 

Trigonometry  Functions, graphing functions, complex numbers, exponential and logarithmic functions, sequence and series. 
Online Books (ebrary)  KCC Students

Trigonometry Demystified: A SelfTeaching Guide  Covers circular functions, right triangles, inverse trigonometric functions, graphs, and applications. Includes example problems, but practice exercises are multiplechoice only. 

Schaum's Outline of Trigonometry  Discusses angles, trigonometric functions, right triangles, applications, graphs, trigonometric identities, and other topics. Examples and graphs are plentiful, but the text lacks true practice exercises. 
Interactive Practice and Tutorials

Calculus on the Web  Choose the first section, "Precalculus Book." Exercises are broken down into individual steps, and each intermediate answer is checked automatically. Produced by Temple University, with the support of the National Science Foundation. 

Visual Calculus: PreCalculus  Online tutorial with practice problems. Covers inverse functions, trigonometric identities, graphs of trigonometric functions, polar coordinates, and conic sections. Installation of the free LiveMath browser plugin required to view some interactive graphs. Maintained by the math department at the University of Tennessee, Knoxville. 

Exercises in Math Readiness:  Tutorial offering three levels of practice problems with both hints and full solutions available. The geometry and trigonometry sections should be particularly relevant. From the University of Saskatchewan. 

Review of Conic Sections  Parabolas, ellipses, hyperbolas, and shifted conics. Includes graphs, worked examples, and sixty practice problems, with solutions. PDF file, 17 pages. 
Videos
Khan Academy: Trigonometry  Blackboardstyle videos with audio narration. See also the algebra videos on the same page for conic sections.
Mathematics Animated  Offers illustrations of the relationship between definition and graph for the conic sections and some trigonometric functions. Requires QuickTime player. 