Unit

#### Description:

Sine, Cosine, TangentWhat if you were given a right triangle and told that its sides measure 3, 4, and 5 inches? How could you find the sine, cosine, and tangent of one of the triangle's non-right angles? After completing this Concept, you'll be able to solve for these trigonometric ratios.Lessons, videos, exercises, and text from CK-12. Additional resources available at this site.

#### Subjects:

• Mathematics > General
• Mathematics > Geometry

#### Keywords:

sine cosine tangent ratio

English

#### Access Privileges:

Public - Available to anyone

#### Collections:

Teacher Resources
Update Standards?

#### CCSS.Math.Practice.MP2: Common Core State Standards for Mathematics

Reason abstractly and quantitatively.

#### CCSS.Math.Practice.MP3: Common Core State Standards for Mathematics

Construct viable arguments and critique the reasoning of others.

#### CCSS.Math.Practice.MP4: Common Core State Standards for Mathematics

Model with mathematics.

#### CCSS.Math.Practice.MP5: Common Core State Standards for Mathematics

Use appropriate tools strategically.

#### CCSS.Math.Practice.MP6: Common Core State Standards for Mathematics

Attend to precision.

#### CCSS.Math.Practice.MP7: Common Core State Standards for Mathematics

Look for and make use of structure.

#### CCSS.Math.Content.HSG-SRT.C.6: Common Core State Standards for Mathematics

Understand that by similarity, side ratios in right triangles are properties of the angles in the triangle, leading to definitions of trigonometric ratios for acute angles.
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