Save guides, add subjects and pick up where you left off with your BBC account. The circumference of a circle = \(\pi d\) or \(2\pi r\). Look at the sector of the circle shown below. To calculate ...

A chord separates the circumference of a circle into two sections - the major arc and the minor arc. It also separates the area into two segments - the major segment and the minor segment.

Trigonometry and circle geometry are used to calculate the toolpaths used in ... and turning partial and full arcs. An understanding of trigonometry and how it can be applied on the lathe is necessary ...