*Chapter 1 - THE CIRCULAR FUNCTIONS Introduction The word " trigonometry " is based on the Greek words for triangle ( trigonon ) and measure ( metron ) . ... we need to review some basic facts from plane trigonometry .*

**Author**: Fred Winchell Sparks

**Publisher:** Rex Bookstore, Inc.

**ISBN:** 9712314677

**Category:** Plane trigonometry

**Page:** 188

**View:** 780