Unit 5: Right Triangle Trigonometry |
Geometric & Spatial Reasoning (GSR) G.GSR.6: Examine side ratios of similar triangles; use the relationship between right triangles to develop an understanding of sine, cosine, and tangent to solve mathematically applicable geometric problems and to model and explain real-life phenomena. (GaDOE, 2022b, p. 12) |
STANDARD & Expectations | LT & SC Lesson Activities & Resources |
G.GSR.6.1 Explain 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. | LT:
SC:
LA&R: |
G.GSR.6.2 Explain and use the relationship between the sine and cosine of complementary angles. | LT:
SC: Review skill from 7th grade: I can write and solve equations using supplementary, complementary, vertical, and adjacent angles. I can explain and use the cofunction relationship between the sine and cosine of complementary angles.
LA&R: |
G.GSR.6.3 Use trigonometric ratios and the Pythagorean Theorem to solve for sides and angles of right triangles in applied problems. | LT:
SC: I can use Pythagorean Theorem, sine, cosine, and tangent to find missing sides of right triangles. I can use sine, cosine, and tangent to find missing angles of right triangles. I can use sine, cosine, and tangent to solve real-life problems.
LA&R: |
