Yeo, Adrian. <br/><br/>
Trig or treat  an encyclopedia of trigonometric identity proofs (TIPs), intellectually challenging games /  [electronic resource] : 
 Encyclopedia of trigonometric identity proofs (TIPs), intellectually challenging games 
Yeo Adrian. 
 - Singapore :  World Scientific Pub.,  c2007. 
 - xiv, 399 p. :  ill. 
<br/><br/><br/>Electronic reproduction. Ann Arbor, MI : ProQuest, 2015. Available via World Wide Web. Access may be limited to ProQuest affiliated libraries. 
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<br/><br/><label>Subjects--Topical Terms: </label><br/>Trigonometry--Problems, exercises, etc.<br/>Trigonometry.
<br/><br/><label>Index Terms--Genre/Form: </label><br/>Electronic books.
<br/><br/><label>LC Class. No.: </label>QA537  / .Y46 2007