Trig Functions Chart We are going to start our study of trigonometric functions with a trig functions chart, that is, a table with the values of sine, cosine and tangent of the main special angles. The angles are provided in radians, as usual in the study of trigonometric functions: {eq}...
We generally work in radians rather than degrees. The 360 degrees in a circle are equivalent to 2Π radians; thus, one radian is 360/(2Π), or about 57.3 degrees. This may seem a bit odd till you think of the circle's circumference, which is 2Πr; if r (the circle's radius) i...