Maor, Eli. <br/><br/>
Trigonometric delights / 
Eli Maor. 
 - Princeton, N.J. :  Princeton University Press,  c1998. 
 - xiv, 236 p. :  ill ;  24 cm. +  hbk. 
<br/><br/>Bibliography: (pages 225-227) and index. 
<br/><br/>Angles -- Chords -- Six functions come of age -- Trigonometry becomes analytic -- Measuring heaven and earth -- Two theorems for geometry -- Epicycloids and hypocycloids -- Variations on a theme by Gauss -- Had Zeno only known this! -- Sin x/x -- A remarkable formula -- Tan x -- A mapmakers paradise -- Sin x = 2:imaginary trigonometry -- Fourier's theorem.  
<br/><br/><label>ISBN: </label>0691057540  
<br/><br/><label>LCCN: </label>97018001 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Trigonometry.
<br/><br/><label>Dewey Class. No.: </label>516.242