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CHAPTER 8 Right Triangle Trigonometry 5 Videos to Watch 1) http://www.khanacademy.org/math/geometry/right_triangles_topic/pyth_theor/v/thepythagorean-theorem 2) http://www.youtube.com/watch?v=Tdz_0_PwB0U 3) http://www.brightstorm.com/math/geometry/pythagorean-theorem/converse-of-thepythagorean-theorem-concept/ 4) http://www.youtube.com/watch?v=nVTtSE5nv7c 5) http://www.khanacademy.org/math/geometry/right_triangles_topic/cc-geometrytrig/v/basic-trigonometry Pythagorean Theorem Facts (8.1) ◦ We use the Pythagorean theorem to: ◦ Solve for a missing side of a right triangle (if I know the other 2 sides) ◦ Decide if a triangle is acute, obtuse or right ◦ Find the distance between two points on a grid by creating a triangle with horizontal and vertical distances Special Right Triangle Facts (8.2) ◦ We use special right triangles when: ◦ We have either a 30-60-90 or 45-45-90 triangle ◦ We are looking for 1 or 2 missing sides (and 1 side is given) Trigonometry Facts (8.3 and 8.4) ◦ We use to solve for missing SIDES or ANGLES in a right triangle if you are given either a SIDE and an ANGLE or 2 SIDES. ◦ Sine ◦ Cosine ◦ Tangent ◦ Secant ◦ Cosecant ◦ Cotangent