Trigonometry
Your Background familiarity with algebra and geometry Algebra Geometry 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