Trigonometry

Your Background

• familiarity with algebra and geometry• Algebra– manipulating algebraic expressions– solving equations

• Geometry– similar triangles– the Pythagorean theorem– a few other things

How to learn trigonometry

• Take your time• Write things down• Draw figures• Work out the exercises

Applications of trigonometry

• Astronomy• Geography• Physics• Engineering• Chemistry• Mathematics– Calculus– Linear algebra– Statistics

What is trigonometry?

• from Greek trigōnon "triangle" + metron "measure"

• The study of angles and of the angular relationships of planar and three-dimensional figures is known as trigonometry

Trigonometric functions and the unit circle