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High School
Functions
Domain
Trigonometric Functions
Cluster
Prove and apply trigonometric identities.
Standard
Prove the addition and subtraction formulas for sine, cosine, and tangent and use them to solve problems.
F-TF.C.9. Prove the addition and subtraction formulas for sine, cosine, and tangent and use them to solve problems.
Coordinates of equilateral triangles
Sum and Difference angle formulas
