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Why are there 360 degree in a circle - Computers & Internet

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360 is more easily mentally divided than 10-based numbers. Once you break 360 down into quarters, you get 90. 90 can be split easily in many ways.
2×45, 3×30, 5×18, 6×15, 10×9, 9×10, 15×6, 18×5, 30×3, 45×2 - 10 ways100 can only be split 7 ways before breaking down into fractions:
2×50, 4×25, 5×20, 10×10, 20×5, 25×4, 50×2 - 7 ways.

Posted on Sep 02, 2010

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Need to know rocker torque on 3.5v6 and all so i think i know but i need you to tell me,i torqued 20ftlbs-40ftlbs then a 140 degrees what does that mean?a 140 degree turn?


A circle is 360 degrees. If you moved the pointer on a clock from '12' through 360 degrees, the pointer would be back at 12 - having travelled 360 degrees in a complete circle.

Half a circle is 180 degrees - if you moved the clock pointer from '12' through 180 degrees it would point at '6'.

A 140 degree turn just means that you turn the bolt clockwise through 140 degrees. Put a small mark on the top of the bolt - at the 12 o'clock position then turn the bolt until the mark is at about where '5' would be on a clock face.

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What's the measure of an arc if it's central angle is 35 degrees?


Assume the central angle is 35 degrees and the radius is 1.

The circumference of the whole circle is 2 x pi x radius. Since the radius is 1, the circumference will be 2 x pi.

Now a full circle is 360 degrees.

Now we can set up a ratio of 35 degrees is to 360 degree as x is to 2pi.

35 x
---- = -------
360 2xpi

Cross-multiply and isolate your variable.

Good luck.

Paul

Mar 25, 2015 | Office Equipment & Supplies

1 Answer

How to make a 5 point star


Use a compass to draw a circle the size you want your star to be.
Draw a second, smaller circle inside the first, using the same center point. Make the second circle about half the size of the first.
Draw a line from the edge of the outer circle to the center point using a ruler.
Place a protractor on the line, with the center hole of the protractor over the center point of the circle.
Measure and mark every 72 degrees around the circle (72, 144, 216, 288 and 360 degrees), dividing the circle into five even sections.
Line the ruler up with the center point of the circle and one of the marks you just made.
Draw a line from the edge of the outer circle, through the center point, ending at the edge of the inner circle.
Continue drawing lines as described until you have drawn the five lines, which evenly divide the circle.
Connect the top of one of the lines that touches the outer circle to the lines that touch the inner circle on both sides, forming a point.
Continue to connect the lines around the circle until you have made a five-point star.
  • Make the inner circle larger for a fatter star or smaller for a thinner star.
  • Draw your star on poster board and cut it out to use as a pattern for drawing more.
  • To make a six-point star, measure and mark every 60 degrees (60, 120, 180, 240, 300, and 360 degrees), dividing the circle into six even sections.
  • To make an eight-point star, measure and mark every 45 degrees (45, 90, 135, 180, 225, 270, 315, and 360 degrees), dividing the circle into eight even sections.
  • Quick and easy may want to do this a few times before the final perfect one. This actually made me think. Haven't done geometry in a very long time.

Dec 23, 2014 | Cars & Trucks

1 Answer

Why is a right angle 90 degrees


Because there are 360 degrees in a full circle so 90 degrees is one quarter of a circle.

Aug 27, 2014 | Office Equipment & Supplies

1 Answer

What does DEG on screen of TI-30Xa mean


It means your calculator is set to degrees mode. Angles can be measured using three different units: degrees (360 degrees in a circle), radians (2pi radians in a circle), or grads (400 grads in a circle).

Pressing the DRG key cycles through the three modes. No matter which mode you select, one of the annunciators will appear on the screen to indicate the current mode.

Dec 07, 2013 | Texas Instruments TI-30XA Calculator

2 Answers

I have a problem concerning radians and angles


About 146 and a half degrees.

If this is homework, be sure to show your work.

Oct 22, 2013 | Office Equipment & Supplies

1 Answer

How to explain one sixth turn of an object


Imagine you are looking at a wheel from the top. There is a notch on that wheel. When you turn the wheel, the notch will move along the circular path of that wheel. When the notch moves completely in one whole turn, it has moved 360 degrees. Remember there are 360 degrees in a circle.
When the notch moves only around half of the circle, it has moved only 180 degrees. The notch should be on the opposite side it started on.
One 1/6 of a turn will be equal to 1/6 of 360 or 60 degrees. So the notch will have only moved 60 degrees if you turn the wheel 1/6.

Nov 11, 2010 | Mathsoft StudyWorks! Middle School Deluxe...

1 Answer

360 degrees divided by 29 spaces


What do you really want to do? 360/29 gives 12.4137931 degrees. Is it not 360 divided by 30? That looks more common, and the result is 12 degrees. That is what you get if you want to inscribe a regular 30-gon in a circle.

Feb 21, 2010 | Casio FX-115ES Scientific Calculator

1 Answer

Head gasket what does it mean when you torque 90 degrees


IF you put a rachet on a bolt and handle is at 12 oclock you would turn from 12 to3 oclock.a circle is 360 degrees, half a circle is 180 degrees 1/4 is 90 degrees, hope this helps good luck.

Oct 30, 2009 | 2001 Daewoo Nubira

1 Answer

Trying to figure angle for six leg circle


I'm not sure what a six leg circle is but a circle has 360 degrees, so if you want to divide it into six parts, each triangle has an angle of 60 degrees at the center, and 60 degrees at the other two angles, so each combined angle of the inscribed hexagon is 120 degrees. (That's measured in degree, not reading off a chop saw.)
Hope that helps...

Apr 18, 2009 | Saws

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