Analysis of errors in solving trigonometric problems among mathematics majors pre-service teachers / 
Deah C. Tupig... [et al.].  
 - x, 74 leaves ;  28 cm. 
<br/><br/><label>ISBN: </label>(cb.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Trigonometric.<br/>Pre-service teachers.