12:52 Area of a Triangle - 1/2 absin(C) - GCSE Higher Maths
Full method for 1/2 ab sin C, including the derivation and a circle-sector example.
Area = 1/2 ab sin C
Find the area of a triangle and segment of a circle (using area = 1/2 ab sin C)
3 hand-picked video lessons for this topic, each checked for relevance and clarity, graded by difficulty and labelled by depth. Press play to watch — nothing loads from YouTube until you do.
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11:22 The Maths Prof: Area of Triangle (Trigonometry 1/2 x ab x sin C)
Clear worked walkthrough of finding a triangle's area using 1/2 ab sin C.
7:34 GCSE Maths - How to Find the Area of a Triangle (2026/27 exams)
Both triangle-area formulas explained cleanly, including 1/2 ab sin C with worked examples.