How to find Degree of angle

ok need to make bends but not sure how to set things up. I posted a picture with the basic #'s and idea. How do I figure out what degree ( if that the proper thing ) to achieve what is needed for this to work.

 

i'm sure you could use some fancy math , i would just draw it out full size (maybe on a flat floor) and use a protractor on it

 

No clue what your trying to do but a protractor and magnetic angle finder will work and not hard to do. A floor drawing and tape measure and leavel will also work. You have many options at hand.

 

The drawing would not have to be full size. So long as it is drawn to scale, the angles would not change!

 

You can use a scientific calculator (every computer has one) and do the arctan(opposite/adjacent) to find your angle. Make sure the calculator is set to degrees. There will be a button called arctan or tan^-1 and opposite/adjacent is the opposite line's size divided by the adjacent line's size. For example, if your triangle was 10" long and 5" tall, the smaller angle would be 26.5 degrees, and the larger would be 63 degrees. This only works for ninety degree triangles.

 

Just looked at your drawing. It looks like you'd want to do 7.75 degrees from your picture.

 

ok gonna have to read this a few times what I have kinda figured out is

big end is 19 inch inside to inside

and 1/2 inside to inside on small end

over a distance of 68 inches

 

Haha, close. I did (19-.5)/2 to find the length of the opposite side. Then 120-52 to find the adjacent side. You can look here and there's a diagram near the bottom with some equations that might help. It's a bunch of jibber-jabber but it works if you get it.

 

Checked it on my CAD software and 7.75 is correct.

jim h

 

When ever I try to plan something out too much, it fails! The trial and error method usally works best for me!

 

Not sure what you are trying to bend, or how, but I often make a drawing (it doesn't have to be full size, but it needs to be a scale drawing as mentioned above) like you have on poster board. Then I cut out the part with the angle, and I have a shop template for bending. If I need the angles for cutting a mitered joint, I bend the pattern in half. I do own protractors, compasses, angle finders, etc, but often if the degree of accuracy required is not that great, I use paper. Its quicker for me, and I am less likely to make mistakes that way.

 

Thanks all,,really need to brush up on some math skills ,,lol

taking the tubes to have them bent and needed an idea of what to tell the person who does it what im trying to do

 

cheyenne, draw it out on the floor then use a sliding t-bevel & a protrator to get you angle.

 

The lower portion of the left hand side can be divided up to form a right triangle, 68" along the long leg, and 9 1/4" along the short leg.

Tangent (x) = Opposite / Adjacent = (y) With X being the angle you want, and Y being the number we get by dividing the opposite leg by the adjacent leg.

Just a little simple trig.

Once you've got that, you can back that out to the angle measure.

ArcTangent (y) = (x) With Y being the number we found above, and X being the angle you're looking for.

Most calculators have a button marked TAN which can be shifted to ARCTAN or 1/TAN. That's what you use here.

It can be worked by hand as well, but it's along trip, and pointless for this purpose.

Here's a pic to help show what I'm talking about:



Hope that helps.

 

If you are taking it to somebody to bend it for you, Make a template!!!!! its fail proof! maybe

 

If you can give me the diameters of the tubes, and the radius of bend you want, I'll knock you out a print you can give to the guy who's doing the bending.

 

Umm,hell yeah,, "with circle s and arrows and a paragraph on the back"

got the answer but still gonna read this like 50 times to understand the language ,,lol