## Brief course in plane and spherical trigonometry |

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### Contents

Chaptek Page I Measurement of Angles | 7 |

Trigonometric Functions of Acute Angles | 11 |

Logarithms | 19 |

Copyright | |

16 other sections not shown

### Common terms and phrases

acute angles algebraic altitude angle of elevation arithms Calculate called celestial celestial equator celestial sphere circle co-function cologarithm complex numbers cos2 cosh cosn cosx curve Divide earth eclipse equal EXERCISES Solve Find log Find the areas Find the distance following triangles fourth quadrant given Hence hour angle hyperbolic functions Illustration integer inverse latitude law of cosines law of sines Law of Tangents log cot loga logsin mantissa measured Moivre's Theorem moon negative observer opposite side ordinate parallax perpendicular plane plane geometry polar triangle pole positive principal values radians radius right spherical triangle right triangle rotates sec2 second quadrant Section sin2 sinh sinx Solution Solve the following Solve the right Solve the triangles sphere spherical triangle SPHERICAL TRIGONOMETRY star subtended subtracted tabular difference tan0 tan2 tangent tion trigonometric functions Verify the following vertex