Special Triangles and Exact Trigonometric Values

6 lessons

Goal

Use 30-60-90 and 45-45-90 special triangles to derive exact sine, cosine, and tangent values for π/6, π/4, and π/3, and fill in the complete unit circle with these coordinates.

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30-60-90 Special Triangle Trigonometric Values

6 lessons

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30-60-90 Special Triangle Trigonometric ValuesUp next
45-45-90 Special Triangle Trigonometric ValuesNot started yet
Exact Values of Sine, Cosine, and Tangent for π/6Not started yet
Exact Values of Sine, Cosine, and Tangent for π/4Not started yet
Exact Values of Sine, Cosine, and Tangent for π/3Not started yet
All Unit Circle Values for Special AnglesNot started yet

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Standards Covered

HSF.TF.A.3Common Core State Standards · Math · Grade 10
(+) 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, cosine, and tangent for _x_, π + _x_, and 2π - _x_ in terms of their values for _x_, where _x_ is any real number.