Useful website for calculations

[macd]

There are no doubt lots of others, but I came across this site when wanting to calculate diagonals to double-check the feet positions for a new engine installation. My trig's a bit rusty. Could be handy for lots of other jobs...adjusting mast-rake, etc.
http://easycalculation.com/trigonometry/triangle-angles.php

 

[DickB]

Good site, some really obscure things there too... However the words "differential calculus" brought fear and trepidation, a spontaneous reaction from my college days. Never did understand those!

 

[macd]

the words "differential calculus" brought fear and trepidation, a spontaneous reaction from my college days. Never did understand those!

Invented by Newton who then kept it to himself for about 20 years. He should have kept quiet for longer.

 

[nigelmercier]

Calculus was my favourite aspect of maths when I was at school. Logical, with little to remember.

 

[Deleted member 36384]

Calculus was my favourite aspect of maths when I was at school. Logical, with little to remember.

It was years later that I realised the usefulness of maths as a tool. I learned it by rote and that was that. It was areas under a curve, integrated neutron density curve to establish rock strength, in my job, was when it began to fall into place. I don't know if was me, the way it was taught, or a combination that was to blame for this state of affairs. I'll hedge my bets it was more me.

This site is useful: http://www.engineeringtoolbox.com/index.html

 

[AngusMcDoon]

The sum of the interior angles of a triangle on the surface of a sphere add up to more than 180 degrees, but the same sum of angles of a triangle on the surface of a pringle add up to less than 180 degrees. There's a useless mathematical factoid.

 

[macd]

There's a useless mathematical factoid.

Oh I don't know. It's surely only a matter of time before someone sets out to sail the Atlantic on a Pringle.

 

[AngusMcDoon]

Oh I don't know. It's surely only a matter of time before someone sets out to sail the Atlantic on a Pringle.

Pringles are a mathematically interesting shape to the terminally geeky like myself. I could contemplate the equations that describe their form quite happily for 3 months at sea.

 

[oldsaltoz]

Here is a link to calculate sails.

Have fun.

http://www.image-ination.com/sailcalc.html

Good luck and fair winds.

 

[oldsaltoz]

here is another very handy calculator.

http://www.hintsandthings.co.uk/workshop/calculators.htm

Good luck and fair winds.