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 STANDARD F.TF.C.9 PrecalculusProve the sum and difference formulas for sine, cosine, and tangent and use them to solve problems. WORKSHEETS Regents-Angle Sum and Difference Identities 1a A2/B/SIII MC, simplifying 3/1/18 Regents-Angle Sum and Difference Identities 1b A2/B/SIII bimodal, simplifying Regents-Angle Sum and Difference Identities 2a A2/B/SIII MC, evaluating 3/4/8 Regents-Angle Sum and Difference Identities 2b A2/B/SIII bimodal, evaluating Regents-Angle Sum and Difference Identities 3a A2/B/SIII MC, identities 2/1/6 Regents-Angle Sum and Difference Identities 3b A2/B/SIII bimodal, identities RELATED TOPIC Regents-Double Angle Identities 1a A2/B/SIII MC, simplifying 2/4/11 Regents-Double Angle Identities 1b A2/B/SIII bimodal, simplifying Regents-Double Angle Identities 2 B/SIII open ended, simplifying 1/18 Regents-Double Angle Identities 3 A2/B/SIII evaluating 4/5/8 Regents-Half Angle Identities A2/SIII 1/5 VIDEOS Using angle difference identities VID Using angle sum identities Using double-angle identities VID Using half-angle identities

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