Access Point #: MAFS.912.G-SRT.3.AP.7aArchived Access Point

Explore the sine of an acute angle and the cosine of its complement and determine their relationship.

Essential Understandings


  • Given an angle, identify the adjacent sides, opposite side, and hypotenuse.
  • Given the sine, identify the cosine of the other angle.
  • Given an angle, identify the angle complementary to it.
  • Given trigonometric ratio, identify the parts of the triangle that relate.
  • Understand the following concepts and vocabulary: adjacent sides, opposite side, hypotenuse, sine, cosine and tangent.
  • Set up the fraction for the trigonometric ratio.
General Information
Number: MAFS.912.G-SRT.3.AP.7a
Category: Access Points
Date Adopted or Revised: 07/14
Cluster: Define trigonometric ratios and solve problems involving right triangles. (Geometry - Major Cluster)

Clusters should not be sorted from Major to Supporting and then taught in that order. To do so would strip the coherence of the mathematical ideas and miss the opportunity to enhance the major work of the grade with the supporting clusters.

Related Standards

This access point is an alternate version of the following benchmark(s).

Related Courses

This access point is part of these courses.
1200400: Foundational Skills in Mathematics 9-12
1211300: Trigonometry Honors
1206310: Geometry
1206320: Geometry Honors
1206315: Geometry for Credit Recovery
7912065: Access Geometry

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