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Formulas for Trigonometric Functions: Sum/Difference, Double/Half-Angle, Prod-to-Sum/Sum-to-Prod (Professor Dave Explains) View | |
Sum and Difference Identities for Sine (Mathispower4u) View | |
A Powerful Way to Derive the Cosine and Sine Sum and Difference Identities (The Math Sorcerer) View | |
Sum and Difference Angle Formula Proof (Sine, Cosine) (MATHguide) View | |
Sum and Difference Formulas (Mario's Math Tutoring) View | |
Sine Sum and Difference Identity Evaluate (Brian McLogan) View | |
Sum and Difference Identities: sin(π/12) (FanoMath) View | |
TR-38: Angle Sum and Difference Identities (Trigonometry series by Dennis F. Davis) (Dennis Davis) View | |
Derivation of Sum and Difference Identities (Randy Anderson) View | |
How to verify sum and difference identities with sine functions (Ms Shaws Math Class) View |