Common Core Aligned Resources for HSF-TF.A.3

(+) Use special triangles to determine geometrically the values of sine, cosine, tangent for π/3, π/4 and π/6, and use the unit circle to express the values of sine, cosines, and tangent for π-x, π+x, and 2π-x in terms of their values for x, where x is any real number.

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