MAT 155
Trigonometry
Elizabethtown Community and Technical College · UGRD · Fall 2026
Catalog description
Includes the trigonometric functions, identities, multiple analytic formulas, laws of sines and cosines, graphs of trigonometric functions in rectangular and polar coordinates, and solving trigonometric equations. Emphasizes applications in each topic. (Students may not receive credit for both MAT155 and any other trigonometry or pre-calculus course.) Lecture: 3 credits (45 contact hours).
Sections
Current meeting, instructor, credit, and enrollment details
2501
26 openSeats: 4/30 seats Last recorded: Aug 15, 2026, 5:53 PM- Days & times
- Mo We · 12:30 – 3:15 PM
- Meeting dates
- 2026-08-17 - 2026-10-11
- Location
- ECTC ATB Building, Room 250 250
- Instructor
- Charles Coulston
Section notes
Instructional method: IP; BP
25Z1
33 openSeats: 27/60 seats Last recorded: Aug 15, 2026, 5:53 PM- Days & times
- TBA
- Meeting dates
- 2026-10-19 - 2026-12-13
- Location
- Online
- Instructor
- Charles Coulston
Section notes
Complete Online Course-This is a fully online class. If proctored exams are required, the instructor may require the use of an online proctoring service.; Instructional method: INTERNET; BW