Common Core Math - HS Geometry
Lesson Plan
Explain sine and cosine relationship
Goals / Objectives
Define complementary angles and identify complementary angle pairs in right triangles
Explain why the sine of one acute angle equals the cosine of its complement
Prove the complementary angle relationship using right triangle geometry
Apply the relationship sin(theta) = cos(90 degrees - theta) to solve problems
Use the complementary relationship to find trig values without a calculator
Understand how this relationship simplifies trigonometric calculations
Standards
HSG.SRT.C.7
HSG.SRT.C.7: Explain and use the relationship between the sine and cosine of complementary angles.
Academic Vocabulary
Not in our source material
Materials
Remediation
Enrichment
Accommodations
Not in our source material