Discover trigonometric ratios that complement each other. Using two videos, the instructional activity introduces the trigonometric ratios. The class discovers the relationship between the sine and cosine of complementary angles.

Concepts

cosine, sine, complementary angles, trigonometric, trigonometric ratios, right triangles, special right triangles

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Additional Tags

math

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Instructional Ideas

• Explore to see if there is any other relationships between trigonometric ratios and complementary angles

Classroom Considerations

• The class should know the parts of a right triangle
• Individuals need access to calculators that can determine inverse trigonometric ratios

Pros

• Provides suggestions for acceleration and intervention
• Includes answer keys

Cons

• None

Common Core

HSG-SRT.C.7