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How To: Use the Pythagorean theorem

Pythagoras was a smart man, so smart that his mathematical theory is named after him and still used today, more than 2,000 years later: the Pythagorean theorem. It implies that the square of the hypotenuse of a right triangle is equal to the sum of the squares of the other two sides. The Pythagorean theorem is a cornerstone of geometry. Here’s how to use it.

How To: Understand and work with rational & irrational numbers

In this video the instructor explains the concepts of rational and irrational numbers. Multiplying a number by itself gives the value of its square. If you apply the square root to that squared number it returns to you the original number. This square root is also called a radical. A square root of a positive number can have two values. For example the square root of 81 is either 9 or -9; this is because when you multiply 9 with itself the square is 81 and even when you multiply -9 with itsel...

How To: Style a sleek A-line bob haircut

Are you obsessed with bobs now after watching bombshell actress Olivia Wilde donning one (albiet it was a wig) in the futuristic action film "Tron"? If you're serious about taking the plunge into short hairhood, then check out this video for your introduction to cutting and styling an A-line bob.

How To: Create a favicon in Adobe Photoshop

Favicons are cute little icons which appear in the browser bar when your website is open. Having this icon adds a little extra branding to your website. You can create your own favicon in Photoshop using the right plugin, and then save it into the root of your site.

How To: Factor perfect square polynomials

Learn how to factor perfect square polynomials and how to solve equations using the square root property. From Ramanujan to calculus co-creator Gottfried Leibniz, many of the world's best and brightest mathematical minds have belonged to autodidacts. And, thanks to the Internet, it's easier than ever to follow in their footsteps (or just finish your homework or study for that next big test).

How To: Make a bootable CD/DVD in Ubuntu Linux

When you are using Linux or Ubuntu, it is smart to back it up. This tutorial will show you how to use a program called Remastersys to clone and backup your Linux distribution including root, home, other partitions and all personal, custom configuration to a fully deployable, shareable, bootable live CD or DVD.

How To: SSH on iPhone, iPhone 3G, and iPod Touch

Curious about all those jailbreak videos and what they mean when they say "SSH into your phone"? In this video, learn how to SSH into either an iPhone, iPhone 3G, or an iPod Touch. Additionally, learn how to download videos from Cycorder on an iPhone and iPhone 3G with Cyberduck. Links & codes you will need:

How To: Diagram gerunds & gerund phases

For those who don't know, a gerund is a noun whose root word is formed from a verb. Anyone interested in brushing up on their grammar skills should view this video by Yossarian on how to diagram gerunds and gerund phrases. Yossarian uses various sentence examples to break down the subjects and verbs to find gerunds and gerund phrases. Learn how to break down the components of any sentence to find the gerund and gerund phrases by following this video tutorial.

How To: Jailbreak an iPod Touch 2g with redsn0w

If you want to run homebrew apps on your second-generation iPod Touch or, as a moral issue, believe you should have root access to a computer that you yourself own, jailbreaking is the key. And this guide from Everything iPod Touch will show walk you through the jailbreaking process for a 2g iPod Touch running the 3.1.3 build of the firmware.

How To: Mix a Mad Hungarian cocktail

What better way to learn how to mix a drink than from a hot girl! This bartending how-to video teaches a cocktail recipe for a Mad Hungarian. You will need spiced rum and root beer. Follow along with this video mixology lesson and find out how to make a Mad Hungarian cocktail. Get your (alcoholic) drink on.

How To: Make a healthy raw breakfast drink

It only takes one day to feel the results from this amazing easy to make raw organic blended breakfast. What this how to video to learn how to make a raw breakfast of champions. All you need for this raw breakfast drink is: pear, apple, lemon, ginger root, and kale.

How To: Mix a gin and ginger cosmopolitan cocktail

The subtle spicy peppery-ness of the aromatic ginger root marries beautifully with the gin, cranberry and orange flavors in this delightful cocktail. You will need ginger, lemon juice, gin, triple sec orange liqueur, and cranberry juice. Watch this video mixology tutorial and learn how to make a ginger cosmo martini.

How To: Play triads and inversions and "Let It Be" on piano

Watch this piano tutorial video to learn how to play triads and inversions along with fingering in the right hand and apply this knowledge to the first few bars of "Let It Be" by the Beatles. This lesson assumes that you have the knowledge to play and spell out every major and minor triad in root position. You'll be able to apply triads and inversions to anything, particularly the Beatles' "Let It Be," after you've watched this helpful how-to video.

How To: Install & Lock Down Kali Linux for Safe Desktop Use

Kali Linux is established as the go-to operating system for penetration testing, but in its default configuration, it's less than ideal for regular desktop use. While in many scenarios, a live boot or virtual environment can resolve these issues, in some situations, a full installation is better. A few simple changes can be made to a Kali Linux desktop to make it safer to use in this environment.

How To: Permanently Browse in Desktop Mode on Android

The majority of Android web browsers carry a "desktop mode" feature that makes mobile websites look like normal computer versions. Mobile versions are designed to work faster and more efficiently on smartphones, but sometimes the desktop version looks better on large displays or has additional features not included in the mobile one.

How To: App Ops Is Alive! Add It to Your Nexus 5's Settings Menu for Per-App Permissions Control

Android's permissions system is simple, transparent, and straightforward. When installing an app, you get a chance to review all of the permissions that the app has requested. These can range from accessing your location data to holding a "wakelock" in order to prevent your phone from entering sleep mode. But your only choice in this matter is to accept all requested permissions, or not install the app.

How To: Curl your hair perfectly with a flat iron

In this tutorial, we learn how to curl your hair perfectly with a flat iron. First, brush your hair out and then spray in some heat protector to all of it. From here, you will section your hair off into small sections and then heat up your iron. Now, clamp the iron to the root of the hair and then twist it 180 degrees. Slowly pull the iron down from the hair. The slower you pull the hair, the tighter the curl is going to be. When you release it, curl the hair with the finger and then move on....

How To: Use a curling iron to curl your hair

In this video, we learn how to use a curling iron to curl your hair. First, blow dry your hair with a large round bristle brush to give it a lot of volume. Then, section your hair off into pieces and heat up your curling iron on medium. Then, put the iron into each section at the bottom and wrap it around into the root of the hair. Leave it in the hair for several seconds until the hair is hot, then release the hair from the iron. Let it out of the barrel slowly and the curl will stay togethe...

How To: Curl your hair with perfect curls using a flat iron

In this tutorial, we learn how to curl your hair with perfect curls using a flat iron. First, pull your hair up so you are just left with the bottom area of the hair. Next, take a small section and place the straightener into the top of the piece. Wrap the hair around the iron and then pull the iron straight down to the root. Repeat this for all of the sections of your hair, until you have curled all of the different pieces. Take the top section down and then curl that. From here, you will be...