Transcript Chapter 8

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