Support · Stage 5 · Trigonometry A
Support Apply trigonometry to find the lengths of unknown sides in right-angled triangles with a given angle including angles in degrees and minutes
Resources for the prerequisite content of this dot point: earlier-stage (or earlier sub-level) dot points in the same strand that students usually need first. Use these to fill gaps before or alongside the core lesson.
Prerequisite links are draft mappings generated from the syllabus structure (earlier stage, same strand, closest content). They are being reviewed by teachers. Spot a poor match? Tell us.
Prerequisite dot points
Establish the relationship between the lengths of the sides of a right-angled triangle
Stage 4 · Right-angled triangles (Pythagoras’ theorem) Draft mapping
- Interactive toolStarterMathigon: Pythagoras' theorem (interactive course)Use it for: Interactive proof-and-practice chapter to discover and apply Pythagoras' theorem.
- Interactive toolEnrichmentMathigon: Triangles and TrigonometryUse it for: Interactive lessons building to Pythagoras and trig ratios.
Identify and describe the hypotenuse as the side opposite the right angle and the longest side in any right-angled triangle
Stage 4 · Right-angled triangles (Pythagoras’ theorem) Draft mapping
- Interactive toolStarterMaths Is Fun: Pythagoras' theoremUse it for: Explanation with an interactive proof.
Apply Pythagoras’ theorem to find the unknown length of a side in a right-angled triangle, giving answers in an exact form or as decimal approximations
Stage 4 · Right-angled triangles (Pythagoras’ theorem) Draft mapping
- Interactive toolStarterMathigon: Pythagoras' theorem (interactive course)Use it for: Interactive proof-and-practice chapter to discover and apply Pythagoras' theorem.
- Interactive toolStarterMaths Is Fun: Pythagoras' theoremUse it for: Explanation with an interactive proof.
- Corbettmaths practice questions: PythagorasUse it for: Free printable graded practice questions (with answers) on pythagoras for drill or a quick check.
- WorksheetDrillKuta free worksheet: The Pythagorean theoremUse it for: Printable skills-practice sheet with answer key on the pythagorean theorem; good for drill or homework.
- VideoStarterCorbettmaths video: PythagorasUse it for: Short worked-example video on pythagoras to model the method before practice or for flipped revision.