5.2.3

Trigonometry

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Trigonometry

Sin, cos and tan relate an angle and two sides in a right-angled triangle.

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Formula triangles

  • Formula triangles can be used to remember the ratios (SOHCAHTOA) and to rearrange the ratios so they can be used.
  • The side opposite the angle being used is referred to as the ‘opposite’ and the side next to the angle being used is called the ‘adjacent’.

Jump to other topics

1Proof

2Algebra & Functions

2.1Powers & Roots

2.2Quadratic Equations

2.3Inequalities

2.4Polynomials

2.5Graphs

2.6Functions

2.7Transformation of Graphs

2.8Partial Fractions (A2 Only)

3Coordinate Geometry

4Sequences & Series

5Trigonometry

6Exponentials & Logarithms

7Differentiation

8Integration

9Numerical Methods

10Vectors

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