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Patrick

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Jason

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Brian

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Bruce

College Algebra covers algebraic topics and skills necessary to succeed in college-level math

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Johnny

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Kylia

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Study topics incliding trogonometric functions, identities and equations, solutions of triangles, complex numbers, and other topics as time permits

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Callie

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Nutrition

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Medical Terminology

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Sociology

Hannah

Dive deep into Beginning Algebra with videos, practice problems, and more.

Beginning Algebra

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Intermediate Algebra

Dive deep into Beginning & Intermediate Algebra with videos, practice problems, and more.

Beginning & Intermediate Algebra

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Chemistry

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Dive deep into Python with videos and more.

Introduction to Python

Arianne Dee

Agile Project and Product Management

Agile & Product Management

Mariya Breyther

Introduction to Microsoft Power BI

Microsoft Power BI

Chris Sorensen

Data Analysis Fundamentals with Excel

Data Analysis - Excel

Chris Sorensen & Ammul Shergill

Getting Started with and Cryptocurrency

Introduction to Blockchain

George Levy

Learn Enough HTML, CSS and Layout to be Dangerous

HTML, CSS & Layout

Lee Donahoe & Michael Hartl

Learn Enough JavaScript to be Dangerous: A Tutorial Introduction to Programming with JavaScript

Introduction to JavaScript

Michael Hartl

R Programming

Jared P. Lander

Digital Marketing Analytics Beyond Advertising

Digital Marketing

Mike Moran

Project Management

Jeffrey K. Pinto

AI in Marketing

AI for Business

AI-Enabled Programming, Networking, and Cybersecurity: Introduction

Professional course with videos and more.

How LLMs Understand & Generate Human Language

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Principles of Accounting

Managerial Accounting

Cyber Security Operations

Algebra and Trigonometry

Quantitative Reasoning

Liberal Arts Math

Angles, identities, and trig functions giving you trouble? Trigonometry is explained step-by-step so solving problems feels more approachable.

Patrick Ford

Callie Rethman

Nick Kaneko

0. Review of College Algebra

1. Measuring Angles

2. Trigonometric Functions on Right Triangles

3. Unit Circle

4. Graphing Trigonometric Functions

5. Inverse Trigonometric Functions and Basic Trigonometric Equations

6. Trigonometric Identities and More Equations

7. Non-Right Triangles

8. Vectors

9. Polar Equations

10. Parametric Equations

11. Graphing Complex Numbers

OLD 1. Angles and the Trigonometric Functions

OLD 2. Trigonometric Functions graphs, Inverse Trigonometric Functions

OLD 3. Trigonometric Identities and Equations 

OLD 4. Laws of Sines, Cosines and Vectors

OLD 5. Complex Numbers, Polar Coordinates and Parametric Equations

NEW (not used) 7. Laws of Sines, Cosines and Vectors

NEW (not used) 8. Vectors

NEW(not used) 9. Polar equations

NEW (not used) 11. Graphing Complex Numbers

Default TOC

This trigonometry study guide covers essential high school formulas: Pythagorean theorem, quadratic formula, distance formula, and area of a triangle.

Trigonometry Study Guide: Key High School Formulas

Essential Algebra and Geometry Formulas for Trigonometry Foundations

Pythagorean Theorem & Basics of Triangles

Solving Quadratic Equations

Essential Algebra and Geometry Formulas for Trigonometry Foundations

Study Guide - Learn with Videos

Pythagorean Theorem & Basics of Triangles

Solving Quadratic Equations