TY  - BOOK
AU  - Yeo,Adrian
ED  - ProQuest (Firm)
TI  - Trig or treat: an encyclopedia of trigonometric identity proofs (TIPs), intellectually challenging games 
AV  - QA537 .Y46 2007
PY  - 2007///
CY  - Singapore
PB  - World Scientific Pub.
KW  - Trigonometry
KW  - Problems, exercises, etc
KW  - Electronic books
N1  - Electronic reproduction. Ann Arbor, MI : ProQuest, 2015. Available via World Wide Web. Access may be limited to ProQuest affiliated libraries
UR  - https://ebookcentral.proquest.com/lib/bacm-ebooks/detail.action?docID=1681221
ER  -