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Introduction to Trigonometry Workbook: Right Triangles, Unit Circle & Core Applications

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4 pages
2025/2026 Written for academic year
Institution University Of South Carolina
Course MATH 115
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Stop guessing your way through trig! This Active-Learning Edition workbook breaks down complex geometric relationships into clear, digestible principles with practice problems and an answer key. Core Chapters Covered: Basic Definitions & Concepts: Master SOH-CAH-TOA, finding side lengths, and finding trig values from points. The Unit Circle & Functions: Complete breakdown of the six core trigonometric functions (sin, cos, tan, csc, sec, cot) across key angle values in radians and degrees. Symmetry and Signs: Master the "All Students Take Calculus" mnemonic to immediately identify positive and negative functions across Quadrants I-IV. Practical Applications: Step-by-step guides to solving real-world trigonometry word problems using angles of elevation and depression. Includes a comprehensive Answer Key detailing how to find reference angles, rationalize denominators, and configure triangle setups.

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PRE MI UM ACT I VE- LE A RN IN G WO RK BOO K




Introduction to Trigonometry
Right Triangles, the Unit Circle & Core Applications


Trigonometry • Active-Learning Edition




How to use this workbook
1. Read the concept explanation. 2. Study the worked example. 3. Try the practice problems yourself.
4. Check your work against the Answer Key. 5. Revisit anything you missed.

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Uploaded on
July 11, 2026
Number of pages
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Written in
2025/2026
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Theodoros anastasiadis
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