options: Prove and apply trigonometric identities.

Define, evaluate, and compare functions.

Interpret functions that arise in applications in terms of the context.

Use functions to model relationships between quantities.

Understand the concept of a function and use function notation.

Model periodic phenomena with trigonometric functions.

Extend the domain of trigonometric functions using the unit circle.

Interpret expressions for functions in terms of the situation they model.

Build a function that models a relationship between two quantities.

Construct and compare linear and exponential models and solve problems.

Analyze functions using different representations.

Build new functions from existing functions.
problem_activity: Find two values where
$${\mathrm{cos}x=-1}$$
.
What is
$${\mathrm{arccos}(-1)}$$
?


correct_option_index: 5