Trigonometry That Makes Sense
Visual. Memorable. Connected. Whether you're teaching a full unit or prepping for the SAT, this trig page helps students build lasting fluency with triangles, circles, and graphs — step by step.
📐 Trigonometry Units
📏 Unit 1: Special Right Triangles
Discover the patterns behind 30-60-90 and 45-45-90 triangles and how they power the unit circle.
Radicals • Ratios • Geometry Review🔁 Unit 2: Introduction to Angles
Master coterminal angles, reference angles, and the difference between degrees and radians.
Rotation • ASTC • Reference Angles🟣 Unit 3: The Unit Circle
Build the circle, memorize coordinates, and understand why those trig values actually make sense.
Exact Values • Symmetry • Patterns📐 Unit 4: Right Triangle Trig
Connect sine, cosine, and tangent to sides of right triangles and solve missing parts.
SOHCAHTOA • Inverses • Applications📈 Unit 5: Graphing Trig Functions
Explore sine, cosine, and tangent as graphs with amplitude, period, and phase shift.
Waves • Periodic Motion • Modeling🔐 Unit 6: Trig Identities
Use and verify trig identities to simplify expressions and prove relationships.
Pythagorean • Quotient • Strategy Practice🧠 Unit 7: Solving Trig Equations
Find angle solutions in multiple ways using algebra, graphs, and inverse functions.
Interval Solutions • Graphing • Applications📐 Unit 8: Laws of Sines & Cosines
Apply trig in non-right triangles using Law of Sines, Law of Cosines, and area formulas.
Oblique Triangles • Applications • Ambiguous Case📊 Unit 9: Modeling with Trig Functions
Use sine and cosine functions to model real-world periodic behavior with context and precision.
Amplitude • Frequency • Phase Shift • Applications