MATH 21 - Plane Trigonometry
- Recent Professors
- Christoph Noffsinger, Erika A. Noffsinger
- Recent Semesters
- Fall 2026, Spring 2026
- Class Size
- 27–30 students
- Credits
- 4
- Prerequisite
- MATH-52 or MATH-52B or MATH-59 or a satisfactory score on the mathematics placement test.
- Fall 2026 Sections
- View Fall 2026 sections of MATH 21
- Transfers To
- CSUCSU GE Area B4
- Description
- The study of trigonometric functions, their inverses and their graphs, identities and proofs related to trigonometric expressions, trigonometric equations, solving right triangles, solving triangles using the Law of Cosines and the Law of Sines, polar coordinates, and introduction to vectors. (L,M)
- Usually Held
- Mon Wed 10:00am–11:50am, Tue Thu 10:00am–11:50am