CK-12 Trigonometry Concepts

By CK-12 Last Modified: Nov 19, 2025

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CK-12’s Trigonometry Concepts is an introduction to trigonometry for the high school student. Topics include: Trigonometric Identities & Equations, Circular Functions, and Polar Equations & Complex Numbers.

Standards Alignment:

Authors:

Bradley Hughes, Larry Ottman, Lori Jordan,

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