ShmoopTube
Where Monty Python meets your 10th grade teacher.
Search Thousands of Shmoop Videos
Triangles Videos 32 videos
This video covers the different types of triangle. What makes a triangle isosceles, scalene, or equilateral? What about the different kinds of angl...
Sine is the opposite over the hypotenuse; cosine is the adjacent over the hypotenuse; and tangent is the opposite side over the adjacent side....
Someday you might be a big, fancy defense lawyer, and you'll have to prove that your client's triangle was congruent to the triangle in question. W...
CAHSEE Math 6.1 Measurement and Geometry 246 Views
Share It!
Description:
Measurement and Geometry Drill 6 Problem 1. Solve for x .
Transcript
- 00:03
Here’s a shmoopy question for you…
- 00:05
Pythagoras has graciously allowed us to use his theorem royalty-free…
- 00:10
…but only if we can solve the below problem.
- 00:12
The two legs of a right triangle are eight inches and x inches long.
- 00:18
If the hypotenuse has a length of (x + 2) inches, find x.
Full Transcript
- 00:22
And here are the potential answers...
- 00:28
This question is testing our recollection of the Pythagorean Theorem.
- 00:32
A squared plus B squared equals C squared. So in this example, a is 8, b is x and c – because
- 00:39
it’s across the right angle part, is the hypotenuse.
- 00:44
C is x plus 2. So the relevant equation looks like this:
- 00:48
And we get 64 plus x squared equals x squared plus 4x plus 4 which reduces to 64 equals
- 00:56
4x plus 4 when we subtract x squared from both sides.
- 01:01
Get rid of the 4 and we have 4x equals 60 or x equals 15.
- 01:07
Answer C. As in… “Cheapskate.”
Related Videos
CAHSEE Math: Algebra and Functions Drill 5, Problem 3. Solve the equation.
Haven't you always wondered how much cardboard it takes to encase a trunk warmer for your pet elephant?
Want to figure out the area and perimeter of irregular shapes? Break them down into regular shapes. For example, a flower can be broken down into s...
It's one thing when all those shapes are sitting flat on the page. But when they start popping out and invading our personal space bubble, we get a...
Does thinking about 3D Geometry get you bent out of shape? Never fear! Watch this video and figure out some fun new shapes to bend back into. We're...