Algebra II Module 2, Topic A, Lesson 4

Four students reading together

Student Outcomes

  • Students will define sine and cosine as functions for degrees of rotation of the ray formed by the positive -axis up to one full turn.
  • Students use special triangles to geometrically determine the values of sine and cosine for 30, 45, 60, and 90 degrees.

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Common Core Learning Standards

CCLS State Standard
MP.5 Use appropriate tools strategically.
F.TF.2 Explain how the unit circle in the coordinate plane enables the extension of trigonometric...
F.TF.3 (+) Use special triangles to determine geometrically the values of sine, cosine, tangent for π/3, π...

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