Trigonometry is said to date back to the third century. We find applications of trigonometry in astronomy, oceanography, land surveying and range finding. Archaeologists also relate the codification of climatic seasons and calendars of various ancient civilizations with aspects of modern trig. This course introduces basic trigonometric formulas useful in pre-calculus. These formulas are explained from their fundamental derivations, covering the properties of right-angle triangles.

Computers, unlike humans, cannot listen and comprehend sounds we enjoy like music. Rather, they code and decode sounds mathematically by representing sounds into constituent waves. These waves have various properties evaluated in this course, covering frequency, wavelength, and amplitude. It is therefore important for sound engineers to understand the basics of trigonometry. Trig is the study of the different relationships between angles including common functions like sine, cosine, and tangent. Also, gain knowledge on using such functions to correctly graph useful quantities that are applied in many industries. On the successful completion of this course you will be able to accurately measure and calculate various angles, and correctly state the laws of trigonometry.

Furthermore, proofs of trigonometric laws are covered to help learners become familiar with them. Learners should be able to easily state the Pythagorean theorem algebraically when they successfully complete this course, and analyze graphs of various trigonometric functions along with their inverses. Can you imagine a world without the applications of trigonometry? A world without geometry or the many branches of mechanics? You will gain knowledge of circular functions, trigonometric ratios, arcs, and the many trig identities relevant to pre-calculus. What are you waiting for? Enroll in this free online course to learn all about the important basics of trigonometry.