Curriculum placement
Precalculus. This describes the skill, not a learner estimate.
Inverse trigonometric functions
Interpret inverse trigonometric functions with restricted domains
Problem types
- Inverse trigonometric values
- Choose a domain that makes a trigonometric function invertible
- Choose the graph piece that can be inverted
- Intervals on which sine or cosine is one-to-one
- Build and use the inverse of a restricted trigonometric function
- Why a trigonometric function must be restricted before it is inverted
Builds on
Leads to
- Solving trigonometric equations
- The complex plane · See it applied
The angle of a complex number is found with an inverse trigonometric function of its parts.
- Vectors and their components · See it applied
The direction angle of a vector is found by applying an inverse tangent to its components.
Related skills
- Logarithms as inverses of exponentials · Shared foundations
- Choosing a periodic model · Shared foundations
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