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Trigonometry

In Trigonometric Identities we will introduce the tools available to you when working with problems involving trigonometric functions. From Angle Sum Identities to the Pythagorean Theorem of Cotangent and Cosecant, you will be equipped to simplify and rewrite trigonometric equations. Learn how to apply Ratio Identities in Rewriting an Identity in Terms of a Ratio and more. From basic concepts such as Simplifying Through Reciprocals to more complex functions such as Decomposing Angles Using Multiplication, Trigonomic Identities provides a wide range of techniques, skills and methods to elevate your level of mastery.

- Trigonometric Identities
- Trigonometric Reciprocal Relationships
- Rewriting in Terms of a Reciprocal
- Simplifying Through Reciprocals
- Reciprocal Multiplication
- Ratio Identities
- Rewriting an Identity in Terms of a Ratio
- Pythagorean Theorem of Sine and Cosine
- Solving a Pythagorean Identity for Sine
- Pythagorean Theorem of Tangent and Secant
- Solving a Pythagorean Identity for Tangent
- Pythagorean Theorem of Cotangent and Cosecant
- Angle Sum Identities
- Angle Difference Identities
- Half Angle Identities
- Angle Decomposition
- Decomposing Angles Using Subtraction
- Decomposing Angles Using Multiplication
- Decomposing Angles Using Addition

Study fundamental topics in college-level algebra with emphasis on application.

Grasp core concepts of statistics such as probability distributions, approximations, and hypothesis-testing.

Pathways are a sequence of tutorials that help you learn a whole subject area, one concept at a time. Choose from multiple teachers and teaching styles.

The American Council on Education's College Credit Recommendation Service (ACE Credit®) has evaluated and recommended college credit for 25 of Sophia's online courses for college credit. These courses are eligible to transfer to many different colleges and universities.