How To Primary grind angle formula?

[hagatha]

The site Wedgek.com has gone away... this was my calculator for the angles I used. I've tried the D. Comeau app. but because it uses precision ground thickness it is not useable for me.
I am a dummy when it comes to math. I need help with using a the formulas I've found. How are they entered into the Windows365 Calculator???
A=arctan((S-E)/(2*G))

A - angle of grind per side
S - stock thickness
E - edge thickness
G - grind height

 

[Easyrider]

It depends if you are using RPN or Infix notation also called algebraic. Most calculators use algebraic.
hit the arc tan button, usually it will be something like “shift and then the tan” button. Add a second parenthesis and do the operation of s-e, then close the second parenthesis. Hit the division button and open another parenthesis. Input 2*G, close the parenthesis twice and hope for the best when you click the enter key.
Do you have specific values for the various variables? Do you want someone else to also run the numbers to check your answer?

Remember PEMDAS!

 

[Mr.Wizard]

I don't know about Windows 365 but for the Windows 7 calculator it would be like this.

Use View menu to change to Scientific mode. Select "Degrees" from the radio buttons. For parameters G = 1.5, S = 0.2, E = 0.01:

2 * 1 . 5 = 3.0

C

0 . 2 - 0 . 0 1 = 0.19

C

( 0 . 1 9 / 3 . 0 ) Inv tan

Result should be: 3.62389

Or you could do it in one line:

( ( 0 . 2 - 0 . 0 1 ) / ( 2 * 1 . 5 ) ) Inv tan

(These aren't the shortest possible key sequences but hopefully the most friendly.)

 

[Obsessed with Edges]

If you have experience with a spreadsheet program like Excel (in MS Office or Office365, for example), you could also plug the variables and formulas into cells and calculate it that way.

Screen capture below shows how it could look, based on the variables and formula given in the OP (I plugged in random values, including those given by Mr. Wizard above):