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# Triple-Angle Formulas and Linear Combinations

## Combination of the sum and double angle formulas; set of terms added or subtracted with a constant multiplier.

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.

## Triple-Angle Formulas and Linear Combinations

by CK-12 //at grade
Advanced applications of trigonometric identities
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• Video

## Deriving a Triple Angle Formula

by CK-12 //at grade
Learn to derive triple-angle formulas from given trigonometric expressions by using existing trigonometric formulas and identities.
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• Study Guide

## Sum to Product Formulas for Cosine and Sine

by Edgar Magana //at grade
This study guide covers the sum to product Formulas for Cosine and Sine
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