Home / Chapter 4
Chapter 4 · Grade 10
Right Triangles and Trigonometry
Pythagorean theorem, special right triangles, trigonometric ratios, and the laws of sines and cosines.
Lessons
Lesson 1 · G10 M4L1
Geometric Mean
Geometric mean in right triangles.
Open lesson → Lesson 2 · G10 M4L2Pythagorean Theorem and Its Converse
Proving and applying the Pythagorean theorem.
Open lesson → Lesson 3 · G10 M4L3Coordinates in Space
Distance formula in three dimensions.
Open lesson → Lesson 4 · G10 M4L4Special Right Triangles
45-45-90 and 30-60-90 triangles.
Open lesson → Lesson 5 · G10 M4L5Trigonometry
Sine, cosine, and tangent ratios.
Open lesson → Lesson 6 · G10 M4L6Applying Trigonometry
Angles of elevation and depression.
Open lesson → Lesson 7 · G10 M4L7The Law of Sines
Solving oblique triangles with law of sines.
Open lesson → Lesson 8 · G10 M4L8The Law of Cosines
Solving triangles with law of cosines.
Open lesson →