Need Vector assistance

[[Ro...]]

What I need to make 3 sections of a part, one on centerline and one 20º on either side.
I'm no mathematician, and I have no idea how to calculate.

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[[To...]]

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For center section, enter X and Y center 0.000. Enter 1.000 in X vector and 0.000 in Y and Z. Make sure expansion is large enough to reach part. Section.

For 20°, enter the COS and SIN of 20° in the X and Y fields. Could be negative value for other side. 0.000 in the Z field.
Make sure X and Y center values are 0.000

Or, create 2 alignments, rotating about Z at 20° and -20°

Then, in the section window, enter X and Y center 0.000 and enter 1.000 in X vector and 0.000 in Y and Z. Make sure expansion is large enough to reach part. Section 1 at Base Alignment. Section 2 at Alignment1 and Section 3 at Alignment2

section 20a.JPGsection 20b.JPG

[[Jo...]]

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I cheat and make calypso do the work. I oftentimes create theoretical features in odd alignments and use formulas to derive nominals for real objects. Make a rotated alignment and switch the plane and it will update the new nominals in that orientation. This is helpful in compound angles for cylinders etc..

[[Ro...]]

Thank you both for your responses, but in the end i took the path of least resistance and just copied Tom's numbers.
So in the end i learned nothing and i'm no smarter, but i got another program in the bag.

[[Cl...]]

I have used for many years the Electronics Vest Pocket Reference Book (copy write 1969).
It has among other things, a table of sine's, cosines, and tangents. Very handy.

[[Ma...]]

If you would need it in future, then just use SIN and COS with angle - thats for 2d - for three axis is better to get help from elements 😃

[[No...]]

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🤣 🤣 🤣

A laminated version of this is my constant companion for more than 30 years now:
https://docplayer.org/docs-images/55/35 ... s/17-0.png

[[Er...]]

Put in a magnitude of 1 and the angle. It helped me to see the relation between angles and vectors. Of course I had to do it on graph paper 😃

https://www.mathsisfun.com/algebra/vect ... lator.html

[[To...]]

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I love mathisfun. I often used the following to teach people about standard deviation while learning about qualifying styli

https://www.mathsisfun.com/data/standard-deviation.html

[[Re...]]

I typically let Calypso do the math for me. I would create a secondary alignment with the 20° rotate, then do the section with the secondary alignment using the original vectors. Then change the feature created back to the original alignment and the vectors should be updated. Then I would delete the secondary alignment since it is no longer needed.