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# Basic Inverse Trigonometric Functions

## Apply inverse trig ratios to determine the measure of unknown angles

Levels are CK-12's student achievement levels.
Basic Students matched to this level have a partial mastery of prerequisite knowledge and skills fundamental for proficient work.
At Grade (Proficient) Students matched to this level have demonstrated competency over challenging subject matter, including subject matter knowledge, application of such knowledge to real-world situations, and analytical skills appropriate to subject matter.
Advanced Students matched to this level are ready for material that requires superior performance and mastery.
• Video

## Inverse Trigonometric Functions: Simplify Expression Using Right Triangle

by Apoorva Handigol //basic
In this example, simplify expressions involving trigonometry and inverse trigonometry by using and solving right triangles.
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• Flashcards

## Inverse Trig Functions and Solving Right Triangles

by Kyle Bardman //basic
These flashcards will help you better understand Algebra II with Trigonometry Concepts.
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