Identities Search Results

How To: Verify trigonometric identities

Need help wrapping your head around trigonometric identities? Watch this free video trig lesson. 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). With this installment from Internet pedagogical superstar Salman Khan's series of free math tutorials, you'll l...

How To: Prove some random trigonometric identities

This video shows the method to prove some trigonometric identities. This involves the use of algebra and knowledge of basic trigonometric identities. The video demonstrates three examples to illustrate this problem and its solution. The first problem shows a relatively simple problem involving sines and cosines. The video shows some basic algebra steps to simplify the problem and prove the identities. The second example involves a slightly complicated problem involving square of combination o...

How To: Make a super hero mask prop for a film or Halloween

Super heros' secret identities are their most guarded secrets. Many choose to protect them with masks, but how to make your mask if you're a new superhero or a filmmaker trying to simulate a super hero? This video will show you how to make your own cheap superhero mask at home, which will be a great prop for your next film or Halloween costume.

How To: Pixelize an image in PhotoFiltre (GMask)

Got something to hide? Learn how to censor or "GMask" an image simply by using the Mosaic option in PhotoFiltre to pixelize the entire thing or just a small (Naughty!) area. It's not that difficult to protect the identities of the not-so-innocent, especially after following the instructions in this video.

How To: Balance chemical equations properly

In this video we learn how to balance chemical equations properly. What is a chemical equation? It's a statement that uses a chemical formula to show identities and relative amounts of the substances involved in a chemical reaction. To balance an equation out you must have the same number of atoms on both sides of the chemical equation. Or, you must have the same amount of mass or matter on both of the sides. Once you have these balanced out so they are the same then you will have it complete...

How To: Find the sides of a 45-45-90 right triangle

First you want to find X using the identities given for a 45-45-90 triangle. When comparing the triangles in the video, we find that X must be 6. Next, use the identity to solve for the measurements of the sides of the triangle. In the video example, 6 is the length of the two sides and 6 times the square root of 2 is the length of the hypotenuse. The video is very short and does not explain a lot of things in detail, but that is because the examples are easy to figure out.

How To: Create interactive presentations with VoiceThread

John explores some ideas on how you might use VoiceThread, a newcomer in the diverse Web2.0 space, that allows you to post pictures and video online and get input from others through voice-enabled comments. VT has some really cool possibilities for the educator. For now, at least, you can get a Pro-account as an educator and set up identities to use for students in your classroom. Teachers can also use VT to post presentations with narration.

How To: Write an autobiography

No matter what age you are or what kind of life you've lived you can put your story out there by writing an autobiography. Every life can be interesting if written about in a well formulated, and honest manner.

News: How Zero-Day Exploits Are Bought & Sold

Most of you already know that a zero-day exploit is an exploit that has not yet been revealed to the software vendor or the public. As a result, the vulnerability that enables the exploit hasn't been patched. This means that someone with a zero-day exploit can hack into any system that has that particular configuration or software, giving them free reign to steal information, identities, credit card info, and spy on victims.

News: These Apps Know Your Age, Gender, Emotions, & More

I think it was 1986 when I first discovered my love for making computers say stupid things out loud. My older brother got a Commodore 64 for his birthday, which came bundled with software that would speak out any term you typed in—and boy, that computer sure made a fool of itself after my five-year-old imagination got a hold of the keyboard.

How To: Inside Bitcoin - Part 1 - Bitcoin and Anonymity

Over the past decade the Internet community has been witness to the rise of many new forms of online interaction. These new technologies have given rise to anonymous networks (like TOR), black markets within the deep web network (like the Silk Road), and even forms of digital currency, or more accurately crypto-currencies, such as Bitcoin. All of these technological advancements have contributed to securing users around the world and protecting their privacy. Therefore it is no surprise that ...

How To: Trap a Tracker

As a hacker or an aspiring one, You need to be careful and anonymous if your doing anything illegal. But you slipped up. Now someone is tracking you! Well luckily you read this post ahead of time and have a backup plan!

Social Engineering: How to Use Persuasion to Compromise a Human Target

Social engineering makes headlines because human behavior is often the weakest link of even well-defended targets. Automated social engineering tools can help reclusive hackers touch these techniques, but the study of how to hack human interactions in person is often ignored. Today, we will examine how to use subtle, hard to detect persuasion techniques to compromise a human target.

How To: Mine Twitter for Targeted Information with Twint

Open-source intelligence researchers and hackers alike love social media for reconnaissance. Websites like Twitter offer vast, searchable databases updated in real time by millions of users, but it can be incredibly time-consuming to sift through manually. Thankfully, tools like Twint can crawl through years of Twitter data to dig up any information with a single terminal command.

How To: Protect Your Identity After the Equifax Cyberattack

Equifax reported on Sept. 7 that it discovered a breach on July 29 which affects roughly half of Americans, many of whom don't realize they have dealings with the company. Hackers got away with social security numbers, addresses, and driver's license numbers, foreshadowing a "nuclear explosion of identity theft." Let's explore what really happened and what you and those around you can do to protect yourselves.

How To: Your One-Stop Guide to Secure, Encrypted Messaging

Now that smartphones have ensured that we're connected to the internet 24/7, online privacy has become more important than ever. With data-mining apps hoping to sell your information for targeted ads, and government agencies only one subpoena away from knowing every detail of your private life, encryption has become our last line of defense.

Coinbase 101: Fees & Fine Print You Need to Know Before Trading Bitcoins & Other Cryptocurrencies

Coinbase is the primary go-to for many users when it comes to investing in Bitcoin (BTC), Ethereum (ETH), Litecoin (LTC), Ripple (XRP), and more, due to its user-friendly interface. But before you join them, know that the ease of use comes with a price. Coinbase charges fees for each transaction, and your bank might even add charges on top of that. Plus, there is some fine print to be aware of.

News: The 5 Best Reddit Apps for iPhone

These days, using Reddit on your iPhone is just as good, if not better, than Redditing on a desktop browser. While there's an official Reddit app for iOS, there are plenty of third-party clients that have similar features as well as custom perks to enhance the experience. But figuring out which Reddit client is best for your daily use can be a lot of work — work that we can make easier on you.

News: Should Google+ Require You to Use Your Real Name?

Google started culling Google+ accounts. There are two main targets: businesses and those who are using pseudonyms. For businesses, Google is promising to provide their own version of Facebook Pages, which will be released later this year. For those who use pseudonyms, they aren't so lucky. According to Google+'s community standards, users must "use the name your friends, family, or co-workers usually call you". The purpose of this rule is ostensibly to discourage spammers and people from set...

News: Mobile Game Developer Fined $50,000 by FTC for Soliciting Emails from Minors

Children under the age of 13 possess insight that can blow the minds of their elders, but not the wherewithal to make important life choices for themselves. This is exactly why there are strict rules against marketing cigarettes to them. In 2000, a law went into effect called the Children's Online Privacy Protection Act that institutes similar consumer protections for our youth's online identities, prohibiting companies from soliciting personal information from children under 13 years of age ...

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