## BTEC First Mathematics for TechniciansThis popular volume covers all the objectives included in the BTEC First Mathematics unit. |

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### Contents

FRACTIONS | 23 |

THE DECIMAL SYSTEM | 39 |

RATIO PROPORTION AND PERCENTAGES | 60 |

DIRECTED NUMBERS | 70 |

INDICES AND LOGARITHMS | 78 |

Chapter? THE SCIENTIFIC ELECTRONIC CALCULATOR | 94 |

Chapters TABLES AND CHARTS | 109 |

INTRODUCTION TO ALGEBRA | 122 |

GRAPHS | 178 |

ANGLES AND STRAIGHT LINES | 200 |

TRIANGLES | 213 |

THE CIRCLE | 237 |

AREA AND VOLUME | 251 |

TRIGONOMETRY | 281 |

STATISTICS | 306 |

frequencies by means of bar charts | 322 |

### Common terms and phrases

AABC algebraic quantity alloy altitude axes AXYZ bar chart bisects bracket centre circle class width column Complementary angles convector heater convert copper corresponding cumulative frequency decimal places decimal point degrees diagram diameter dimensions directed numbers divided division equal EXAMPLE Exercise factor Find the angle Find the area Find the length Find the value formula fractions frequency distribution given gradient graph height Hence histogram hypotenuse isosceles triangle mass measure metres millimetres multiply negative number numerator and denominator obtained ohms parallel sides parallelogram pence percentage Plot proportional quantity radius ratio rectangle recurring decimals reflex angle represent rhombus right angle right-angled triangle Self-Test sequence of operations shown in Fig shows significant figures similar sine Solve square standard form straight line subtract tables or calculator tangent three significant figures trapezium triangle Fig units vertical volume whole number wire write zero