x

Parts of a sector

Labelled sector with centre O, two radii marked r, central angle theta, arc length L and shaded sector area A

A sector is a slice of a circle made by two radii and an arc. If the angle at the centre is $θ\theta$ , then the sector is the fraction $θ360\frac{\theta}{360}$ of the whole circle.

Sector Areas and Arc Lengths Lesson

IGCSE
Maths
Sector Areas and Arc Lengths

Step-by-step lessons covering CIE IGCSE Maths Sector Areas and Arc Lengths for Core and Extended tier. Each lesson works through exam-style questions in Paper 1 and Paper 3 (Core) or Paper 2 and Paper 4 (Extended) format. Start with the Core-tier fundamentals in number and algebra before moving on to the more demanding Extended-only topics like calculus-adjacent algebra and advanced trigonometry.

Lessons

x

Parts of a sector

Labelled sector with centre O, two radii marked r, central angle theta, arc length L and shaded sector area A

A sector is a slice of a circle made by two radii and an arc. If the angle at the centre is $θ\theta$ , then the sector is the fraction $θ360\frac{\theta}{360}$ of the whole circle.

Sector Areas and Arc Lengths Lesson

IGCSE
Maths
Sector Areas and Arc Lengths

Step-by-step lessons covering CIE IGCSE Maths Sector Areas and Arc Lengths for Core and Extended tier. Each lesson works through exam-style questions in Paper 1 and Paper 3 (Core) or Paper 2 and Paper 4 (Extended) format. Start with the Core-tier fundamentals in number and algebra before moving on to the more demanding Extended-only topics like calculus-adjacent algebra and advanced trigonometry.