Paper 2 · Trigonometry
⏱ Tested in 5+ recent exam questions
Lesson 8 of 8
Trigonometry 1.8 – Sector of a Circle
This tutorial is for members
Read the lesson notes free below — subscribe to watch the full worked video and download the PDF.
Subscribe for full access · €199/yrYou’ll learn
- Pick the right sector formula on page 9 by checking the angle's units first
- Find arc length and sector area in degrees: L = 2πr·(θ/360), A = πr²·(θ/360)
- Find arc length and sector area in radians: L = rθ, A = ½r²θ — no π in the formula
- Work backwards from a given area or arc length to find the radius or the angle
Most recent exam questions
- 2025 P2 Q7(c)(v)
- 2024 P2 Q10(a)(iii)
- 2023 P1 Q8(b)(ii) — deferred
- 2023 P2 Q4(b)(ii) — deferred
- 2022 P2 Q7(c)
💬 Stuck on something in this lesson?
Send your question with this lesson’s name attached — you’ll get a reply by email.