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Simplifying Trigonometric Expressions using Sum and Difference Formulas

Simplify sine, cosine, and tangent of angles that are added or subtracted.

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

Simplify Trig Expressions

by Rayna Schlossberg //basic
Use the sum and difference formulas to simplify and then evaluate a trigonometric function value.
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• Flashcards

Simplifying Trig Expressions using Sum and Difference Formulas

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