TY  - BOOK
AU  -  	P Abbott
AU  - Hugh Neill
TI  - Teach yourself Trigonometry
T2  -  	Teach yourself books (Lincolnwood, Ill.)
SN  - 9781848310872
U1  -  	516.24 ABB-T .MA 
PY  - 2003///
CY  -  	Chicago, IL
PB  - Contemporary Books
KW  -  	      Trigonometry
N1  -  	Historical background -- The tangent -- Sine and cosine -- In three dimensions -- angles of any magnitude -- Solving simple equations -- The sine and cosine formulae -- Radians -- Relations between the ratios -- Ratios of compound angles -- The form a sin x + b cos x -- The factor formulae -- Circles related to a triangle -- General solution of equations
ER  -