Geometry and Trigonometry | Right-Triangle Trigonometry | Notes and Practice

Lesson Review Available

Review the foundation notes with TTA Pro Mr.O before solving. If this skill drill is part of an anchor lesson, the notes stay available during practice.

Objective: By the end of this lesson you can solve every Digital SAT right-triangle trigonometry question across six levels: Level 1 naming the hypotenuse, opposite and adjacent sides from a marked angle; Level 2 writing SOH-CAH-TOA ratios and scaling them; Level 3 core procedures with Pythagorean triples, cofunctions (sin A = cos B) and similar triangles; Level 4 switching between figures, tables, the xy-plane and context; Level 5 multi-step problems with parameters, two triangles and unit-circle signs; and Level 6 hard-level traps - reflex angles, altitude-to-hypotenuse figures, parameter ranges and the hand-vs-Desmos decision.