3 Circles Superscribed by a Circle -  Ever figure it out?
80027
I guess no one here is that smart.  HAHA!
189752
sphere, cube, pyramid, cilinder
274075
I'm not familiar with that one.  I know a circle as a "set of points all equidistant from a fixed point in a plane".\n\nI see where you are going with your definition, but I don't think it is worded well.  For one, it doesn't specify that these direction-changing lines are pivoting around a fixed point.  They could just be scattered all over the plane in which case, since they are infinite, you'd end up with a shaded in plane instead of a circle.  For another, they would need to be line segments instead of lines, and the endpoint would be what is creating the closed loop.  And which point on the line segment would they be pivoting around?  If it's one endpoint, then the line seg. would be the radius; if the midpoint, diameter.  Any other point on the line segment would create 2 circles.
249638
3 - you are standing in a circle
595637
if you dont have one already, make a nice big copy of the entire circle with everything labeled.  repetition and review is really just the best way to remember anything.  when i try to think of the unit circle values for 30-60-90 triangles, i just think of it in terms of the long side and the short side.  the short side is always 1/2 and the long side is always (sq. root of 3)/2.  if i need to remember the values for, say, a 120 degree angle, i always draw a quick little sketch- just enough to show which are the short and long sides.  the horizonal is short, so the cosine is 1/2.  the vertical is long, so the sine is (root 3)/2.  this method works for all angles that are multiples of 30 degrees.  45, 135, 225, and 315 degrees are easy because you only have to remember one value for all the sine and cosines: (root 2)/2\n\njust dont forget to look at your sketch to see which of the values is negative! (and if the picture method doesnt work for you, theres a trick to knowing those too . . .\n\nhere are the quadrant numbers: (imagine the axis in between)\n\n2 1\n3 4\n\nuse this acronym to remember what trig functions are positive in each quadrant:\n\nALL---------> ALL of them are positive\nStudents----> Sine is positive\nTake--------> Tangent is positive\nCalculus----> Cosine is positive
276680
Ok, If A is a point on the circle and C is the middle of the circle then AC is the RADIUS of the circle.  Which means any point on the circle to C WILL ALWAYS be 12.  So if the excess of the circle to B is 8, then Add the RADIUS to the distance to B, and we arrive at the result of 20. Which is AC + (Distance of circle to B)\n\n20
1126910
no, a circle has infinite lines of symetry. For an equilateral triangle, i believe there r only 3
513263
Spiral, lenticular, elliptical and irregular\n\nSee the link
638243
1) think of  a series of disks stacked on top of eachother, so thier centers are aligned.  Each disk has a slightly smaller radius then the one under it.  If the disks are very thin (infinately so), and you stack enough of them so that the top disk has a radius of zero (a point), then you have a  cone. \n\n2) Take a circle, and remove some portion of it- like a pizza with one or more pieces removed. Take the remaining portion of the circle, and roll it, so that the straight edges adjoining the removed section are connected together along their entire lengths, and you have a cone.
557989
You can't. It depends on which way the diameter is turned in the circle. There are an infinite amount of solutions. Tell your teacher to be more specific.\n\ntosmith
959565
A venn diagram is used to indicate the relationship between sets so an answer of 112 doesn't make sense.\n\nIt is hard to explain without a picture but I will try.\n\n1. Draw a rectangle- This represents the Universal set (all students.\n2. Inside the rectangle draw a circle and label  it TT (for tinytoons)\n3 Draw another circle overlapping the first one and label it A (animaniacs)\n4 Draw a third circle overlapping both circles and label it P&B\n\nYou should now have a rectangle with three overlapping circles in it. Now you need to write the numbers.\n\n22 dont watch cartoons so write 22 in the space outside all the circles but inside the rectangles.\n\n73 watch only tinytoons so write 73 inside the section of the TT circle which doesn't overlap the other circles.\n\n31 watch only tiny toons and pinky and the brain - write 31 in the section where TT overlaps P&B\n\n135 do not watch pinky and the brain (22 watch nothing, 73 watch only TT so 135-(73+22)= 40 watch A and TT or only A\n\n200 watch TV in total, 126 have already ben allocated, leaving 74. Of these 63 watch A, so 74-63 = 9 watch only P&B. Write 9 in the P& B circle that doesn't overlap the other circles\n\n135 do not watch pinky and the brain so 65 do watch it. 40 of these are allocated so 25 watch A and P&B or all three. [  In math terms A intersection PB = 25] but as the question states "14 watch animaniacs nad pinky and the brain\n" which is [A intersection PB = 14] there is a logical contradiction. either the question is written incorrectly on this site
893599
You may want to be more specific on this one... are you trying to find the largest possible area? You can inscribe lots of different trapezoids in a circle. \n\nAnd which theta are we talking about? The angle that the base makes with the circle?\n\nTry that one again,\n\nUMRmathmajor
751528
Yes.  For example, take the two from the top left corner, and the two from the bottom right corner, and make a new square touching the top right corner.\n\n\nAAAA BBBBB\nC.........D..........E\nC.........D..........E\nC.........D..........E\nFFFFFF GGGG\nH.........I............J\nH.........I............J\nH.........I............J\nKKKKK LLLLL\n\nbecomes\n . . . . . . . . . . . . . AAAA\n . . . . . . . . . . . . .C . . . . J\n . . . . . . . . . . . . .C . . . . J\n . . . . . . . . . . . . .C . . . . J\n. . . . . . .BBBBB LLLLL\n. .........D..........E\n. .........D..........E\n. .........D..........E\nFFFFFF GGGG\nH.........I\nH.........I\nH.........I\nKKKKK
932841
This might help --> http://www.uwm.edu/~ericskey/TANOTES/Geometry/node15.html
697206
What is a circle mark?  This is odd, very odd indeed.  I think you are reading something into something the wrong way.
791300
Use the FOIL method; First, Outer, Inner, Last.\n\nFirst, n * n\n\nOuter, n * 5\n\nInner, n * 7\n\nLast 7 * 5.\n\nThen add them all together.\n\n22 NOV 06, 0420 hrs, GMT.
929308
take a knife and cut 4 times thru the circle and u end up with 8 pie wedges...then line the wedges up-----<<<<<<<<------like that and cut thru on the dashed line, the fifth cut, giving u 16 wedges...not very mathematical but it works