Chabot College Fall 2008 Course Outline for Mathematics 37 TRIGONOMETRY WITH AN EMPHASIS ON ITS GEOMETRIC FOUNDATIONS Catalog Description: 37 - Trigonometry with an Emphasis on its Geometric Foundations 5 units Plane trigonometry, with topics from plane geometry. Contains the entire subject content of Mathematics 36. Includes circular and right triangle trigonometric functions; trigonometric equations, graphs and identities; triangle solutions. Polar coordinates. Also includes congruence, properties of polygons, parallel lines, similarity, areas, volumes, and coordinate geometry. Prerequisite: Mathematics 55, 55L or 55B (completed with a grade of C or higher) or an appropriate skill level demonstrated through the Mathematics Assessment process. May not receive credit if Mathematics 36 has been completed. 5 hours [Typical contact hours: 87.5] Prerequisite Skills: Before entering the course the student should be able to: 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. perform basic operations on complex numbers; solve quadratic equations by factoring, completing the square, and quadratic formula; find complex roots of a quadratic equation; sketch the graphs of functions and relations: a. algebraic, including polynomial and rational b. logarithmic c. exponential d. circles; find and sketch inverse functions; perform function composition; solve exponential and logarithmic equations; apply the concepts of logarithmic and exponential functions; solve systems of linear equations in three unknowns using elimination and substitution; apply the properties of and perform operations with radicals; apply the properties of and perform operations with rational exponents; solve equations and inequalities involving absolute values; solve equations involving radicals; graph linear inequalities in two variables; find the distance between two points; find the midpoint of a line segment. Expected Outcomes for Students: Upon the completion of the course the student should be able to: 1. identify and use the trigonometric ratios in problem solving; 2. use radian measure; 3. define trigonometric functions in terms of the right triangle and the unit circle; 4. write down from memory the values of sine, cosine, and tangent functions of standard both in degree and radian measure; 5. write down from memory the Pythagorean identities, reciprocal identities, double angle formulas for sine and cosine, and sum and difference formulas for the sine and cosine; 6. prove trigonometric identities; 7. use trigonometric formulas; 8. solve trigonometric equations with multiple angles over different intervals; angles, Chabot College Course Outline for Mathematics 37, page 2 Fall 2008 9. 10. 11. 12. 13. 14. 15. 16. use the law of sines and the law of cosines to solve oblique triangles; graph trigonometric functions; graph the inverse sine, inverse cosine, and inverse tangent functions; convert between polar coordinate system and rectangular coordinate system; graph polar equations; define and/or illustrate: segment, ray, angle, midpoint of a segment, bisector of an angle or segment, types of triangles and other polygons, congruence and similarity of triangles, perpendicular and parallel lines; use definitions of the items in (8), along with postulates and theorems about them, together with undefined terms, to prove geometric theorems, both synthetically and analytically; and both directly and indirectly; compute areas and volumes of geometric figures. Course Content: 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. Trigonometric functions Trigonometric equations Trigonometric formulas and identities The graphs of trigonometric functions and their inverses Polar coordinates Solution of triangles and related problems Nature of an axiomatic system Points, lines, planes, segments, rays, angles Radian measure Converse, inverse, contrapositive Midpoint of a segment, bisector of a segment, bisector of an angle Congruence (with related constructions) and similarity of triangles Properties of triangles Parallels and perpendiculars Coordinate geometry Properties of polygons Areas of polygons, volumes and surface areas of polyhedra Area and circumference of circle: volumes and surface areas of cylinders, cones, and spheres Proofs of geometric theorems Method of Presentation: 1. 2. 3. Lectures Group discussions Problem solving sessions Assignments and Methods of Evaluating Student Progress: 1. 2. Typical Assignments a. Read section 3.1 in your text. Do exercises 1 – 13 odd, 15 – 20 all, and 27. b. Use the unit circles on a rectangular grid system to find values of sin x for every angle that is a multiple of π/6 for the angles between 0 and 2π. Using those values, draw the graph of y = sin x. Methods of Evaluation Student Progress a. Homework b. Quizzes c. Midterms d. Final Examination Chabot College Course Outline for Mathematics 37, page 3 Fall 2008 Textbook(s) (Typical): Analytic Trigonometry with Applications, Barnett/Ziegler/Byleen, Brooks/Cole Publishing Co. 2006 College Geometry A Problem Solving Approach with Applications, Masser/Tempe/Maurer, Pearson/Prentice Hall, 2008 Special Student Materials: Scientific calculator, ruler, and compass Revised: CSS 9-17-07