Right Triangles Altogether (Day 2)

Lesson Prep

Lesson Details

• Duration: 50 minutes

• Learning Goal: Develop understanding of when to use the Pythagorean Theorem, Trigonometry, or Special Right Triangle properties to solve problems.

Classwork

• Estimation – Triangle Dot

• Warm Up

  • Taken from New Visions

• Practice

  • Pile-Up taken from Great Maths Teaching Ideas

• Spiraling Practice

Standards

Common Core

• HSG.SRT.C.8 – Use trigonometric ratios and the Pythagorean Theorem to solve right triangles in applied problems.

TEKS

• G.9(A) – determine the lengths of sides and measures of angles in a right triangle by applying the trigonometric ratios sine, cosine, and tangent to solve problems

• G.9(B) – apply the relationships in special right triangles 30°-60°-90° and 45°-45°-90° and the Pythagorean theorem, including Pythagorean triples, to solve problems