Find the Sine of an Angle

We've all made them. I remember making hundreds of paper snowflakes when I was in elementary school. You take a piece of paper and fold it in half, then fold it in half again. You now have a piece that is one fourth the size of the original. Now you fold it in half diagonally. ...more

Nobody could predict the success of Microsoft's Kinect, not even Microsoft themselves. So, it was quite a surprise when it ended up earning a Guinness World Record for fastest-selling consumer electronics device, and an even bigger surprise to see people buying one that didn't ...more

If you want to install laminate flooring on your stairs I would recommend that you do a lot of research and find the information you will need to do it correctly. Installing laminate flooring on stairs can be tedious and time consuming and is a lot different than installing la ...more

Metal is a great material to work with. It's rigid, tough, malleable and conductive, but sometimes the part we need doesn't exist in any store. In order to create custom pieces, you need to either melt the metal and cast it in a mold, or heat it until it's soft enough to shape ...more

In Monday's post, we created a sliceform model of a hyperbolic paraboloid. In today's post, we will create a similar model using skewers. The hyperbolic paraboloid is a ruled surface, which means that you can create it using only straight lines even though it is curved. In fac ...more

Curve stitching is a form of string art where smooth curves are created through the use of straight lines. It is taught in many Junior High and High School art classes. I discovered it when my math students started showing me the geometric art they had created. The process of ...more

Welcome to Minecraft World! Check out our advanced tutorials and come play on our free server. And don't miss this weeks Weekly Workshop! If you're anything like the typical Minecrafter, then you've got a few secrets to hide. Maybe it's valuable commodities like diamonds, ore ...more

The developing team Techland gets a free pass. Having thoroughly enjoyed their previous title, Call of Juarez: Bound in Blood, this sequel was bought on day one by good ol' fashion blind faith. After playing for most of today, it's still to early to tell if the game is a mess ...more

Is game play king? Or was it that graphics is king? or maybe the story? Arghhh... well, regardless from which school of thought you come from, Tera online has bet most of their chips on game play. Tera's game play separates this game from the rest. The ability to deal damage ...more

Traditional Aboriginal didgeridoos are made from trees that have been hollowed out by termites. Finishing work to smooth out surfaces and decorate the didgeridoo would soon follow. Lucky for you, you don't have to spend lots of money or find a hollowed out tree to create a did ...more

Have you always wondered how to make a customizable and efficient TNT cannon in Minecraft? Are you looking to raid some bases on a PVP/factions/griefing server, but don't know where to start? Well, this tutorial will go over how to make a TNT cannon, and the different ways you ...more

Now, I know what you're thinking... "I need an extra sexy coffee table that is like no other." OK, Maybe not. Maybe you're thinking, "I need a conversation starter that doesn't have to do with economic injustice, Left/Right political paradigms or health insurance. I need it ...more

It's once again Monday, which means it's time to highlight some of the most recent community submissions posted to the Math Craft corkboard. I also thought we'd take a look at building a model that has appeared in numerous posts. It's the simplest of the intersecting plane mod ...more

Culinary collective Studiofeast is known for thinking outside the box, especially when it comes to food. They've hosted inventive and spectacular events like the L Train Lunch, where a high-end meal was served to guests on a moving train, and the Datalicious Last Supper, where ...more

If you're like me, you were disappointed when NASA cut their human space flight program. No longer could children and adults in dead-end jobs dream of someday walking on the surface of the Moon or drinking floating globules of water through a straw. Homo sapiens as a species a ...more

Welcome to Minecraft World! Check out our tutorials, post to the community corkboard, and come play on our free server! The workshop last Saturday revolved around creating a working movie screen in Minecraft, and everyone joined in to see how it works. But this tutorial is fo ...more

You Want White Teeth Without Expensive Over-The-Counter Products? Here's An Inexpensive, Effective Solution. Everywhere you look there are products for whitening teeth. You could spend a fortune on products you have to use everyday. This tutorial will show you a natural, inex ...more

Motion trails in Autodesk Maya can be very handy at times when animating your scene. Keying a bone/joint or other object every so many frames can take up quite a bit of time and can sometimes be a big hassle, too. I have found many times when I could have really used one. I al ...more

By Louis Tharp RealJock.com is pleased to present this first in a series of articles on improving your swimming form and performance from Louis Tharp, out gay man, swim coach for the Army Triathlon Team at the U.S. Military Academy at West Point, and author of the new book Ov ...more

well first you would have to find good bouncing balls. (basketballs would work great!) then find different angles you can bounce the ball into the victims sack. causing pain and a laugh.

|Choose Your View: Quick Bullet Points | Detailed Descriptions Android's newest major update is a special one — it's the tenth full version of the world's most commonly used operating system. The latest release, dubbed simply Android 10 (codename Android Q), was first showcas ...more

The sector area is a section of the circle. You can think of it as finding the area of a pizza slice instead of the entire pizza. The formula equals: The angle measure/360 x pi x radius squared. Video: .

Whether it's a short road trip or an 18-hour flight, our phones are now essential travel companions. No longer do we need a GPS unit, maps, cameras, camcorders, or even boarding passes. However, not all phones are created equal in this regard. Some are more suited for travelin ...more

In a surprising twist of expectation management, Magic Leap managed to not only ship but deliver the Magic Leap One I ordered on Wednesday by 4 p.m. PT on the same day. After spending about an hour with the headset running through set up and poking around its UI and a couple ...more

It's always a big deal when the company that makes Android releases a new phone. Google's Pixel series has made a name for itself in three short years behind its camera prowess, but now it's time to start competing with the major players. That said, Google should like how thei ...more

One of Android's biggest strengths is its flexibility. There's usually more than one way to perform the same task, which makes it easy to find an alternate method that works better for you. Android also has some hidden features that newer users might not be aware of, so we mad ...more

In July 2017, LG announced a new smartphone lineup, the Q series. These devices focus on providing some flagship features at a more affordable cost — features such as an 18:9 1080p display. LG's goal here seems to be adding value for the more budget-conscious users, and in 201 ...more

It looks like the Huawei P20 Pro won't be the only phone with a triple camera for much longer. Rumors indicate the upcoming LG V40 ThinQ will share the same number of cameras. And just like with dual cameras, LG is showing that there is more than one way to arrange them. With ...more

While much of the world is currently in some form of quarantine due to the COVID-19 pandemic, augmented reality (AR) gives us all the opportunity to see virtual content while stuck in our homes. In addition to installing mobile AR apps or playing with camera effects on Facebo ...more

The iPhone X has a new unlocking mechanism called Face ID, which replaces the old Touch ID system since the phone no longer has a fingerprint sensor. The way it works is simple — you just look at the phone, it recognizes your face, then the system unlocks — so Apple deserves t ...more

There's absolutely nothing comfortable about flying, unless you happen to be tiny enough to fit into the limited space offered on airplanes, or wealthy enough to afford a first-class ticket. And if you're about to embark on a long flight, catching a few Zs can feel like an imp ...more

Planning a vacation overseas can sometimes feel overwhelming with the number of things you need to remember before heading out. Since smartphones keep us connected at all times, it's essential that you have everything you need here as well. Unexpected events can arise while on ...more

In a previous tutorial, we were able to measure vertical surfaces such as walls, books, and monitors using ARKit 1.5. With the advent of vertical plane anchors, we can now also attach objects onto these vertical walls. In this tutorial, you'll learn how to make your augmented ...more

You can spend all day putting up shelves and still have them end up crooked. Even if you've got a stud finder or a level, it's still easy to make mistakes, and a few millimeters is all it takes to screw make a shelf noticeably uneven. If you find yourself in this predicament, ...more

A typical resistance spot welder can range in price from about $200-$800, but with a little resourcefulness and a bit of free time, you can make one like this for about $10 or less. Before starting on this project, there are a couple of videos you should check out, because yo ...more

In the latest update to the ongoing Meta Company patent infringement case, the court has responded to a request from the defendants, and the answer isn't good news. As Next Reality reported earlier this month, John Sines, the chief financial officer for the old Meta Company t ...more

The last time we heard from Meta, the makers of the Meta 2 augmented reality headset, things looked pretty bleak. Now, as several new facts have come to light, we have confirmation regarding the beleaguered company's fate: Meta is done. As we reported back in September, the c ...more

Advertisers must love when their commercials go viral. Take for instance the Esurance commercial where an elderly woman completely misunderstands Facebook jargon. "That's not how it works! That's not how any of this works!" And a meme is born. Well, what if I told you there ...more

Good day to everyone, today I will present some basic and advanced concepts that targets sophisticated attacks on the social basis, also I will write about some steps that can prevent this attacks from occuring, basically we will examine Social Engineering from the angle of at ...more

Instead of suffering through long, dull meetings with your supervisors and coworkers, you can turn those office table sessions into your very own psychological experiment. Using the tricks below, you'll be able to hack your verbal responses and physical movements to convince ...more

A 45 45 90 triangle is a special right triangle because you can use short cuts to find leg length and hypotenuse length. This video solves two problems involving leg length and hypotenuse length. Video: . Highlights of the video A 45-45-90 triangle is an isosceles triangle, w ...more

Surprising? No. Exciting? Absolutely. After a grand introduction by at the Apple event on September 10, 2019, the iPhone 11 is finally here. We may have known nearly everything about this new iOS device ahead of time, thanks to the usual surge of reliable leaks and rumors. Th ...more

Surveillance is always a useful tool in a hacker's arsenal, whether deployed offensively or defensively. Watching targets yourself isn't always practical, and traditional surveillance camera systems can be costly, lacking in capabilities, or both. Today, we will use motionEyeO ...more

There's something extremely satisfying about hunting down your online adversaries and knocking them out with a well-placed shot, which probably explains why shooting games are still one some of the most popular time killers for iOS and Android. Shooting games for mobile come ...more

The Galaxy S10 has finally been revealed to the masses, and it certainly doesn't disappoint. As the flagship to herald the tenth anniversary of the venerable Galaxy S line, the S10 has kept popular and familiar design elements like the immersive Infinity Display while employin ...more

While many are familiar with Samsung, I'm pretty sure most Americans couldn't name the second-largest smartphone OEM. It's actually Huawei, and they recently released a spec-sheet dream of a phone in the Mate 20 Pro. So naturally, we wanted to see how it compared to the larges ...more

If you want to make clothes for your cat, you're on your own. As I recently said in this article, cats will just totally flip out if you make them wear things. Your dog may also flip out, but I've found them to be more tolerant, personally. Anyway, here are the pictures of th ...more

The iPhone XR has touched down alongside the XS and XS Max, and it utilizes tried and tested materials found on the iPhone 8, while being molded in the same vein as the iPhone X. The budget-friendlier flagship comes with its own set of design elements to set it apart from its ...more

Researchers at MIT's Computer Science and Artificial Intelligence Laboratory have created Wi-Fi technology that identifies where you are, which may eliminate the need for passwords. Video: . The system, called Chronos, can determine where a user is with an accuracy of "tens of ...more

If you hold your phone upright while taking a video, you've surely seen the horrific end results. When you try to play the video back on any other display, roughly 70 percent of the screen is occupied by black bars. I normally scold people for this behavior, as it makes for t ...more