Search Results | circle
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How to Use the Unit Circle in Trigonometry
science.howstuffworks.com/math-concepts/unit-circle.htm
A unit circle is an important part of trigonometry and can define right angle relationships known as sine, cosine and tangent.
What Is the Arctic Circle? 9 Stone-cold Facts About the Region
science.howstuffworks.com/environmental/earth/geophysics/arctic-circle.htm
The Arctic Circle is a region marked by frigid temperatures, strange sunlight and glaciers galore. And for hundreds of thousands of people, it's also home sweet home.
How Crop Circles Work
science.howstuffworks.com/science-vs-myth/unexplained-phenomena/crop-circle.htm
Are crop circles the work of alien visitors? Are they a natural phenomenon? Are they elaborate hoaxes perpetrated by some very dedicated humans? Learn how researchers try to separate the supernatural from the scientific.
Is the Mystery of Namibia's Fairy Circles Finally Solved?
science.howstuffworks.com/science-vs-myth/unexplained-phenomena/namibias-fairy-circles.htm
In the Namib Desert, fairy circles have stumped researchers for decades. Where did they come from? One scientist thinks he's solved the mystery.
How to Get Rid of Dark Circles Under Eyes
health.howstuffworks.com/skin-care/beauty/skin-and-makeup/get-rid-of-dark-circles-under-eyes.htm
Want to know how to get rid of dark circles under eyes? Visit HowStuffWorks to learn how to get rid of dark under eyes.
How to Get Rid of Dark Circles Under Eyes Quiz
play.howstuffworks.com/quiz/get-rid-of-dark-circles-under-eyes-quiz
Dark circles are actually hyper-pigmented areas that make that spot under your eye look darker than the skin that surrounds it. But what causes them -- and how on Earth can they be erased? See how much you know with this quiz.
What can I do daily to reduce dark circles under my eyes?
Dark circles, or bags, under the eyes are a common, yet hard-to-treat skin care problem. Get home remedies and treatment ideas for dark circles.
What Is Pi?
science.howstuffworks.com/math-concepts/pi.htm
Whether the circle is as big as planet Mars or as small as a tennis ball, the ratio of its circumference divided by its diameter will always equal pi (3.14). But why?
Can You Identify the Animals From "The Lion King"?
play.howstuffworks.com/quiz/can-you-identify-the-animals-from-the-lion-king
It's the circle of life, and it moves us all—but it's a lot easier to move through certain circles if you can recognize everyone in them. How well do you remember the animals featured in this beloved Disney hit?