Paper 2 · Trigonometry
⏱ Tested in 2 exam questions since 2018
Lesson 3 of 8
Trigonometry 1.3 – Sketching right angled triangles
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
- Sketch a right-angled triangle from one given trig ratio (e.g. cos A = 15/17)
- Use Pythagoras to find the third side, then read off the ratio the question asks for
- Leave answers in surd form (10/√149) or as a fraction a/b where a, b ∈ ℤ
- Show the sketch for the marks — the calculator shortcut gets the number, not the marks
Most recent exam questions
- 2025 P2 Q6(c)
- 2018 P2 Q4(b)
💬 Stuck on something in this lesson?
Send your question with this lesson’s name attached — you’ll get a reply by email.