WHILE WATCHING VIDEOS: pause often and try the problems on your own, TAKE NOTES, open the video in full screen, CLICK ON THE GEAR TO CHANGE THE SPEED
Other Resources
More Info. about the Pythagorean Theorem
McCoy-The Pythagorean Theorem and its Converse
PHSchool-The Pythagorean Theorem and its converse
Virtual Nerd: What is the Pythagorean Theorem?
Virtual Nerd: How Do You Find the Length of a Leg of a Right Triangle?
Virtual Nerd: What is the Converse of the Pythagorean Theorem?
Virtual Nerd: How Do You Determine if a Triangle Is a Right Triangle if You Know its Sides?
Other Resources
More Info. about 30, 60, 90 Triangles
More Info. about 45, 45, 90 Triangles
McCoy-Special Right Triangles, Part 1
McCoy-Special Right Triangles, part 2
PHSchool-Special Right Triangles
Virtual Nerd: What is a 30-60-90 Degree Triangle?
Virtual Nerd: What is a 45°-45°-90° Triangle?
Virtual Nerd: How Do You Find Missing Sides in a 30°-60°-90° Triangle?
Virtual Nerd: How Do You Find a Missing Hypotenuse in a 45°-45°-90° Triangle?
Other Resources
McCoy-The Sine and Cosine Ratios
PHSchool-The Sine and Cosine Ratios (Prentice Hall)
Virtual Nerd (What is the Sine Ratio?)
Virtual Nerd (How Do You Find a Missing Side of a Right Triangle Using Sine?)
Virtual Nerd (How Do You Find the Sine of an Angle in a Right Triangle?)
Virtual Nerd (How Do You Find a Missing Side of a Right Triangle Using Cosine?)
Virtual Nerd (How Do You Find the Cosine of an Angle in a Right Triangle?)
Other Resources