Sullivan, Michael J., Jr. Department of Mathematics, Chicago State University, Chicago, Illinois.
Last reviewed:January 2021
- Plane trigonometry
- Trigonometric functions
- Properties of trigonometric functions
- Signs of trigonometric functions
- Sum and difference formulas
- Product-to-sum formulas
- Graphs of trigonometric functions
- Inverse trigonometric functions
- Solution of right triangles
- Solution of oblique triangles
- Infinite series representation
- Polar coordinates
- Complex numbers
- Complex functions
- Related Primary Literature
- Additional Reading
The study of triangles and the trigonometric functions. One common use for trigonometry is to measure heights and distances that are awkward or impossible to measure by ordinary means. Surveyors use it to find heights of mountains and distances across lakes and countries; engineers use it in the design of large structures and roads; astronomers use it in accurate measurements of the time and in locating the position of objects in the sky; and navigators on the sea and in the air use it to find latitudes, longitudes, and direction. Trigonometry has evolved from use by surveyors, engineers, and navigators to applications involving ocean tides, the rise and fall of food supplies in certain ecologies, brain-wave patterns, the analysis of alternating-current electricity, and many other phenomena of a vibratory character.
The content above is only an excerpt.
for your institution. Subscribe
To learn more about subscribing to AccessScience, or to request a no-risk trial of this award-winning scientific reference for your institution, fill in your information and a member of our Sales Team will contact you as soon as possible.
to your librarian. Recommend
Let your librarian know about the award-winning gateway to the most trustworthy and accurate scientific information.
AccessScience provides the most accurate and trustworthy scientific information available.
Recognized as an award-winning gateway to scientific knowledge, AccessScience is an amazing online resource that contains high-quality reference material written specifically for students. Contributors include more than 10,000 highly qualified scientists and 46 Nobel Prize winners.
MORE THAN 8700 articles covering all major scientific disciplines and encompassing the McGraw-Hill Encyclopedia of Science & Technology and McGraw-Hill Yearbook of Science & Technology
115,000-PLUS definitions from the McGraw-Hill Dictionary of Scientific and Technical Terms
3000 biographies of notable scientific figures
MORE THAN 19,000 downloadable images and animations illustrating key topics
ENGAGING VIDEOS highlighting the life and work of award-winning scientists
SUGGESTIONS FOR FURTHER STUDY and additional readings to guide students to deeper understanding and research
LINKS TO CITABLE LITERATURE help students expand their knowledge using primary sources of information