Trigonometry, a one-semester course, prepares students for further studies of mathematical topics in Calculus and Physics. The course begins by teaching students to measure angles in degrees and radians, arc lengths, and chords. Students then study the basic trigonometric functions, sine, cosine, and tangent, and their inverses as well as the relationships of these functions to chords and right triangles. In addition, students apply their study of trigonometric functions and identities to find angles of elevation and depression and solve right triangles. Students taking this course should have successfully completed one year of Algebra II.