GCSE Maths – How to Use the Tangent Rule to Find an Angle Trigonometry doesn’t need to be confusing—when you’re working with right-angled triangles, the tan rule is your go-to for finding an unknown angle. 📌 What to revise: • Use the formula: tan(angle) = opposite ÷ adjacent • Rearrange to find the angle using inverse tan • Make sure your calculator is in degrees! 💡 These questions appear in higher-tier papers and often involve real-life contexts like ramps, ladders, or angles of elevation. 🎯
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