useful info

Hi all

I found this phamplet whilst looking throught my wife's grandads books and found it very usefull maybe it will be usefull to some of you out there

Steve

Printed out a copy, I think that may be very useful.

Thank you

Ralph

I have sent for a new one.

They are only tuppence

I hope you all realise that this chart only works if you use logarithms!

"They are only tuppence "

Plus 1½d postage.

You're obviously forgetting the £4.00 postage or should it be £4.0s.0d John

I can't see it in Euston Road now !

**LINK**

BobH

I expect here is an APP to do the same thing now.

Edited By V8Eng on 19/11/2015 21:56:06

That's a great find Steve, your wife's grandad was a preserver of special documents that would otherwise be lost forever. Thank's for sharing it here.

As for preserving things, here's something that I won back in 1986, it allows one to do the same trigonometry to a lot of decimal places and it's only on it's 3rd set of batteries in 29 years. HP11c. I love it; RPN and all the mathematical functions (I have a Polish background btw). Programmable of course, which was interesting in 1986.

* Danny M *

Who remembers being taught SOHCAHTOA at school?

It gives you all the formulae for the right angle triangles in that chart.

Sine of angle=Opposite/Hypotenuse; Cosine of angle=Adjacent/Hypotenuse; Tan of angle=Opposite/Adjacent.

Norm

Edited By mechman48 on 20/11/2015 11:21:19

In my school our maths teacher was known by the nickname Spanner Lee; so called for his habit of looking over your shoulder and telling you to 'tighten up little boy'

He taught us to chant Sinoppipe______cosadipe_____tanoppad. I don't think we ever had to spell them but I've never forgotten the chants.

Brian

I cannot do the math required. Free computer programs insure that I don't have to learn.

Now I'm retired I have no need for any of that; if I do need any of that sort of info I have access to a simple app on my tablet called 'Triangle calc' or use the tables in my Zeus book...

George.

I still have my log tables and slide rules from when I started as an apprentice toolmaker 52 years ago. We where taught to remember all the formular .

If it wasn't for calculators ,et al, there would be need for soduko.

We were taught :

Some People Have (SINE = Perpendicular / Hypotenuse)

Curly Brown Hair (COSINE = Base / Hypotenuse)

'Til Painted Black (TANGENT = Perpendicular / Base)

This was from the days when we could work to two decimal places using a 10" Log/Log Slide rule, (Still have it!) but still holds true today.

Only understood a Slide Rule when shown that it was Log tables plotted out so that they could be moved relative to each other to add or subtract the readings.

Howard

Edited By Howard Lewis on 27/11/2015 22:38:55

Have not used my slide rule for years, but still find trig (etc) calcs useful to do at times and can still do them the "hard" way.

A simple 2D CAD app. can solve many trig calcs quite quickly.

There is also a simple triangle program available to install on your PC or whatever...

We were taught ....

Some Officers Have (Sine=Opposite over Hypotenuse)

Curly Auburn Hair (Cos = Adjacent over Hypotenuse)

That Others Admire (Tan = Opposite over Adjacent)

So many ways to skin a cat!!

Danny, I still use a scientific Casio that I got in 1980!! It's been used a lot and never missed a beat!!

cheers

Bill