Skill |
Type |
Description |
Source |

4.1 Right-angled Triangles |
Workbook |
Define trigonometric functions both in right-angled triangles and more generally + express angles in degrees + calculate all the angles and sides in any right-angled triangle given certain information |
HELM |

Sine, Cosine and Tangent of An Angle of Any Size |
Booklet |
This unit explains how we define the trig ratios sine, cosine, and tangent for an angle of arbitrary size |
MathsCentre |

The Trigonometrical Ratios |
Worksheet |
This leaflet defines sine, cosine and tangent of angles in a right-angled triangle and gives some standard ratios |
MathsCentre |

4.3 Trigonometric Identities |
Workbook |
Use the main trigonometric identities + use trigonometric identities to combine trigonometric functions |
HELM |

Trigonometrical Ratios in A Right Angled Triangle |
Booklet |
This unit introduces the ratios sine, cosine and tangent, with reference to a right angled triangle |
MathsCentre |

Trigonometric Ratios For 300, 600, 450 Etc |
Worksheet |
On completion of this worksheet you should be able to evaluate the trigonometric ratios for 300, 600, 450 and their associated angles without using a calculator |
Coventry University |

Trigonometric Ratios For Any Angle |
Worksheet |
On completion of this worksheet you should know the definitions for the sine, cosine and tangent of any angle and be able to write these in terms of an acute angle |
Coventry University |

Trigonometric Ratios For Right Angled Triangles |
Worksheet |
On completion of this worksheet you should understand what is meant by the trigonometric ratios sine, cosine and tangent and be able to use these ratios to calculate sides and angles of right angled triangles |
Coventry University |

Trig identities |
Video - 40 mins |
In this unit we consider trigonometric identities and how to use them to solve trigonometric equations |
MathTutor |

Trig ratios in a right angled triangle |
Video - 35 mins |
Knowledge of the trigonometric ratios of sine, cosine and tangent is vital in very many fields of engineering, science and maths. This unit introduces them and provides examples of how they can be used to solve problems |
MathTutor |

Trig ratios of an angle of any size |
Video - 28 mins |
Knowledge of the trigonometric ratios sine, cosine and tangent is vital in many fields of engineering, maths and science. This unit explains how the sine, cosine and tangent of an arbitrarily sized angle can be found |
MathTutor |

Trig ratios 1 |
MiniClip |
Trig ratios 1 |
Leeds University |

Trig ratios 2 |
MiniClip |
Trig ratios 2 |
Leeds University |

Trig identities 1 |
MiniClip |
Trig identities 1 - Basic identities |
Leeds University |

Trig identities 2 |
MiniClip |
Trig identities 2 - Compound angle formulae |
Leeds University |

Trig identities 3 |
MiniClip |
Trig identities 3 - double angle formulae |
Leeds University |

Solving trig equations 1 |
MiniClip |
Solving trig equations 1 |
Leeds University |

Solving trig equations 2 |
MiniClip |
Solving trig equations 2 |
Leeds University |

Solving trig equations 3 (identities) |
MiniClip |
Solving trig equations 3 (identities) |
Leeds University |

Solving trig equations 4 (compound angle formulae) |
MiniClip |
Solving trig equations 4 (compound angle formulae) |
Leeds University |

Solving trig equations 5 (double angle formulae) |
MiniClip |
Solving trig equations 5 (double angle formulae) |
Leeds University |