Radians, Arcs and Sectors
On this page, we will look at another measure of angles, that is, radians. This is a far more useful measure than degrees. Formulae for calculating arcs and sectors become simpler and most importantly, we need to use radian measure whenever we are doing Calculus with trigonometric functions. Calculating arc lengths and sector areas is straightforward, but take care, some of the questions on this topic can be...