AC9M9SP01 • Practice

The constancy of the sine, cosine and tangent ratios for...

Read the quick preparation notes, then start when you are ready.

Quick preparation

  • recognise the constancy of the sine, cosine and tangent ratios for a given angle in right-angled triangles using properties of similarity
  • understanding the terms “base”, “altitude”, “hypotenuse”, and “adjacent” and “opposite” sides to an angle, in a right-angled triangle, and…
  • investigating patterns to reason about nested similar triangles that are aligned on a coordinate plane, connecting ideas of parallel sides and…
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