Larson, Ron <br/><br/>
Precalculus / 
Larson, Ron [and three others] 
 - Philippine edition. 
 - Manila :  Rex Book Store,  c2019. 
 - vi, 297 pages :  25 cm. 
<br/><br/>Includes index. 
<br/><br/>Chapter 1. Analytic geometry -- Chapter 2. System of equations -- Chapter 3. Angle measurement and graphs of trigonometry -- Chapter 4. Trigonometric identities and equations -- Chapter 5. Sequences and series -- Index. 
<br/><br/><label>ISBN: </label>9789712394584