Solved

A Triangle Math Formula

Posted on 1998-01-31
6
1,231 Views
Last Modified: 2006-11-17
This has little to do with VB other than the program I am writing is written in VB. It is really about math but I didn't know where else to ask.

I have a triangle

a
|\
|_\c
b


I always know the length of the three sides.
Angle b is always 90 degrees.

What the heck is the formula to find the angle of a or c?

I know that the two angles add up to 90 degrees but can't remember my highschool math well enough to remember how to figure this out. Too many years without using it I guess.
0
Comment
Question by:schworak
  • 4
6 Comments
 
LVL 3

Author Comment

by:schworak
ID: 1454676
Edited text of question
0
 
LVL 3

Author Comment

by:schworak
ID: 1454677
Edited text of question
0
 
LVL 3

Author Comment

by:schworak
ID: 1454678
Edited text of question
0
Courses: Start Training Online With Pros, Today

Brush up on the basics or master the advanced techniques required to earn essential industry certifications, with Courses. Enroll in a course and start learning today. Training topics range from Android App Dev to the Xen Virtualization Platform.

 
LVL 5

Accepted Solution

by:
dirtdart earned 40 total points
ID: 1454679
In your drawing above, side I will refer to side ab and side ac, referring to the sides running between the angles.

angle a = Atn(cb/ab)
angle c = Atn(ab/cb)
0
 
LVL 8

Expert Comment

by:mrmick
ID: 1454680
hmmm...

That returns radians dirtdart, schworak is working in degrees.

schworak, the formula for degrees is dirtdarts formula with an added conversion:

angle a = Atn(cb/ab)  * (180 / 3.14159265359)
angle c = Atn(ab/cb)  * (180 / 3.14159265359)

0
 
LVL 3

Author Comment

by:schworak
ID: 1454681
That works great. Thanks. RADIANS and DEGREES are easily converted between each other.
0

Featured Post

Gigs: Get Your Project Delivered by an Expert

Select from freelancers specializing in everything from database administration to programming, who have proven themselves as experts in their field. Hire the best, collaborate easily, pay securely and get projects done right.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Introduction I needed to skip over some file processing within a For...Next loop in some old production code and wished that VB (classic) had a statement that would drop down to the end of the current iteration, bypassing the statements that were c…
Have you ever wanted to restrict the users input in a textbox to numbers, and while doing that make sure that they can't 'cheat' by pasting in non-numeric text? Of course you can do that with code you write yourself but it's tedious and error-prone …
Get people started with the process of using Access VBA to control Outlook using automation, Microsoft Access can control other applications. An example is the ability to programmatically talk to Microsoft Outlook. Using automation, an Access applic…
Get people started with the utilization of class modules. Class modules can be a powerful tool in Microsoft Access. They allow you to create self-contained objects that encapsulate functionality. They can easily hide the complexity of a process from…

813 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

13 Experts available now in Live!

Get 1:1 Help Now