However, curved lines are much more difficult to measure than straight lines, which is why it's important to familiarize yourself with the arc length formula. Arcs are an important aspect of ...

In order to derive the formula to calculate the angle at the centre of the sector, the formulae for the arc length and area of a sector can be rearranged so that we can calculate the fraction of ...

Some examples showing the application of angle formulas are given below: 1. Find the angle of a segment in a circle if the arc length is 7π and the radius is 9 units.

GCSE; Edexcel; Circles, sectors and arcs - Edexcel Arc length. The circumference of a circle is its outside edge, and is the same distance from the centre at every point along its length.