lesson
Exact Values of Sine, Cosine, and Tangent for π/4
State and explain the exact values of sin(π/4), cos(π/4), and tan(π/4) using the 45-45-90 triangle on the unit circle.
Updated 2 months ago · 2 views
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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.
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/4You are here
- Exact Values of Sine, Cosine, and Tangent for π/3Not started yet
- All Unit Circle Values for Special AnglesNot started yet
Learning standards covered
HSF.TF.A.3Common Core State Standards · Math · 10th Grade(+) 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.
Open Global Standard:OGM.12.TRG.1
OGM.12.TRG.1