Tangent (function)

Jargon-Free Definition

A trigonometric ratio comparing two sides of a right triangle.

QCAA/AC9 Definition

The ratio of the opposite side to the adjacent side in a right-angled triangle.

Examples of Word Use in School

  • Use tangent to Solve the missing side.
  • Calculate .
  • Decide whether sine, cosine or tangent is needed.

Mathematical Definition

For an angle in a right triangle, .