Video lesson on Pythagoras Theorem and SOH CAH TOA

Description

In this video lesson, we study Pythagoras' Theorem and SOH CAH TOA, two essential topics in right-angled triangle trigonometry for the Cambridge IGCSE Mathematics (0580) syllabus. The lesson explains the concepts clearly and demonstrates how to apply them to solve typical IGCSE exam questions. You will first learn Pythagoras' Theorem, including when it can be used and how to find the length of an unknown side of a right-angled triangle. The lesson then introduces SOH CAH TOA, explaining what each ratio means and how to use sine, cosine, and tangent to calculate both unknown side lengths and unknown angles. Worked examples are included to help you understand the methods and apply them confidently in assessments. In this lesson, you will learn: • What Pythagoras' Theorem is and when it applies • How to find an unknown side of a right-angled triangle using Pythagoras • The meaning of SOH CAH TOA • How to use sine, cosine, and tangent ratios • How to find unknown sides and angles in right-angled triangles This video is suitable for: • Cambridge IGCSE Mathematics (0580) students • Trigonometry revision and exam preparation • Students who want a clear and structured explanation of right-angled triangles