Trigonometry
Graphs and Models
by Marvin L. Bittinger, Judith A. Beecher, David Ellenbogen, Judith A. Penna
Trigonometry -- Textbooks.
Writing a summary for young readers…
For young readers
Book data: Open Library
Graphs and Models
by Marvin L. Bittinger, Judith A. Beecher, David Ellenbogen, Judith A. Penna
Book data: Open Library