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Geometry & Trig
From arc ratios to complementary trig. Master the visual side of the SAT.
Circle Equations
Complete the square instantly and identify centers/radii from general form.
Arcs & Sectors
Convert radians without pi and find sector areas using simple ratios.
Polygons & Ratios
Similar Area Ratio hacks and polygon interior/exterior angle rules.
Trigonometry Hacks
The Complementary Angle Theorem. Sine equals Cosine when angles sum to 90.