4.6.2

Trigonometric Ratios

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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 (SOH CAH TOA) 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

1Number

1.1Place Value

1.2Factors & Multiples

1.3Operations

1.4Fractions, Decimals & Percentages

1.5Growth & Decay

1.6Measurements & Units

1.7Accuracy

2Algebra

3Ratio, Proportion & Rates of Change

4Geometry & Measures

5Probability

6Statistics

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