Does anyone know a good site that has a calculator with the sign "pi" on it?
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In Windows XP, click on Start button then All Programs, \nthen accessories, then calculator.\nOn the menu bar of the calculator click "View", Check Scientific & Decimal.  There is a pi button on the bottom row in the center.  This may also be in earlier versions of Windows.
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I don't know this equation, but pi is the greek letter P. it can be used for any variable, but since it is widely accepted as the constant 3.1415 (= a circles circumference divided by its diameter) this would be a dumb decision.\n\nFor example when you need to sum many values, you use the Sigma, but for multiplying many values you use the big PI.\n\ngrtz,\nGB
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try http://www.coolmath4kids.com/
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try www.quickmath.com and www.calculator.com. I have a lot of others if you want them.
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3.14159 26535 89793 23846 26433 83279 50288 41971 69399 37510 \n\n= "pi."  This number is calulated by dividing a circle's circumference by its diameter.  This number, or ratio, holds steady for all sizes of circles.
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download.com\nsearch for mathtype software and download it!\nall the best!
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try this link\n\nhttp://www.ualr.edu/~lasmoller/pi.html
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try this\nhttp://en.wikipedia.org/wiki/Pi
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http://www.bymath.com\n\nand this is my weblog it is new but it will been good in future http://bymath.blogfa.conm\nDont forget comment!!!
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http://www.calculus.org/
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email me, calcu_lust@yahoo.com, i'll write out a nice solution.\n\nEdit: Go to my website, and aforementioned nice solution is typed out as a .pdf for you to download, with all the correct symbols and such:\nhttp://geocities.com/calcu_lust/yahooans.pdf
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http://www.algebra.com
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www.a729.piczo.com\nwww.murderousmaths.co.uk\nwww.bbc.co.uk/revision\nwww.bbc.co.uk/bitesize\nwww.yahoo.com
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Ha!  I just happen to know pi to 60 decimal places off the top of my head.  \n3.141592653589793238462643383279502884197169399375105820974944
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http://walking.about.com/library/cal/uctemp.htm\n\nThis one is great. The mathematical calculation is easy, but if you don't want to pull out your calculator, this one does it out to two decimal points.
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http://www.math.com\nhttp://www.hotmath.com
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Switch your calculator from degrees (DEG) to radians (RAD). That should do the trick. \nHere are some quick trig rules you need to know:\nIn radians just remember that pi is 180 degrees. Pi/3 is 60 degrees, pi/2 is 90, pi/4 is 45 degrees and so on. \nIn a unit circle, the hypotenuse is always 1.\nSin is always the far side away from the angle (the vertical side). We call that the opposite side.\nCos is always the adjacent side (or horizontal side).\nIn a right triangle with angles 60 and 30, the shortest side is always 1/2 the hypotenuse, so in a unit triangle, it is just 1/2. You can use the pathagorean theorem to find that the longer side is the square root of (3/4), or (sqrt(3))/2.\nIn a right triangle with angles 45 and 45, the opposite and adjacent sides are equal, and we can use the pathagorean theorem to find that the sides are the square root of (1/2), or 1/(sqrt(2)).\n\n1. Sin 1/3 pi. This is the same as sin pi/3 which is a 60 degree angle. If you draw the triangle on a unit circle you would see that the opposite side is the longer side of a 90/60/30 triangle. We have seen above that the length is (sqrt(3))/2.\n\n2. Cos pi. Easy. pi is 180 degrees, so draw the unit circle. You see that it is just a striaght horizontal line going the other way so the answer is -1.\n\n3. cos pi/4 is a 45 degree angle. We know from above that both sides have to be 1/(sqrt(2)).\n\n4. sin pi/4. Same as #3.\n\n27. What is 315 degrees? Well draw your unit circle. Go, 90, then to 180, then to 270, then go 45 more degrees and you will end up at 315 degrees. Draw your triangle. We know that the hypotenuse is 1, so the coordinates will simply be, (cos 315, sin 315). Cos 315 is just a 90/45/45 triangle in the bottom right quadrant so the adjacent side is positive. The opposite is negative, so you end up with coordinates (1/(sqrt(2)), -1/(sqrt(2))). Do the same to solve the last question youeself.