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Instructional Video

Khan Academy: Trig Identities: Proof: Sin(a+b) = (Cos A)(sin B) + (Sin A)(cos B)

Curated by ACT

Video demonstrating the proof for the formula for the sine of the sum of two angles.

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CCSS: Adaptable
Concepts
sine, trigonometric identities
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Additional Tags
sine of the sum of two angles, sum of two angles, khan academy, trig identities, addition formulas
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Classroom Considerations
  • This video is hosted on YouTube
Common Core
HSF-TF.C.9 HSF-TF.C.8