## Plane and Spherical Trigonometry |

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### Contents

PRELIMINARY REVIEW Chapter 1 may be omitted and referred to as needed The book may be begun with either Chapter 2 or Chapter 3 as desire... | 3 |

Factors and terms Division by zero | 6 |

Fractions | 7 |

Copyright | |

131 other sections not shown

### Common terms and phrases

11 read 9 Prop angle of elevation approximately bottom called cd LCot LCos cd LTan LSin celestial sphere central angle characteristic circle of radius co-function cologarithm common logarithm complex number cos2 cotangent decimal point digits dihedral angle equal equation Example EXERCISES find log Find the distance five-place tables four-place tables graph Hence horizontal interpolation inverse functions latitude law of cosines law of sines LCos d LCot LCos d Prop LCot cd LTan log cot Logarithms of Trigonometric LSin d LTan LTan cd LCot mantissa miles per hour negative obtain perpendicular plane pole polygon positive acute angle Proof quadrant radians radius vector read 50 read as printed real numbers rectangular coordinates regular polygon right triangle sides significant figures Similarly sin2 Solution sphere spherical triangle subtends subtract tabular difference tan2 tangent terminal ray tion trigono Value Logio x-axis zero