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A Triangle Math Formula

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.
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schworak
Asked:
schworak
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1 Solution
 
schworakAuthor Commented:
Edited text of question
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schworakAuthor Commented:
Edited text of question
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schworakAuthor Commented:
Edited text of question
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dirtdartCommented:
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)
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mrmickCommented:
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)

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schworakAuthor Commented:
That works great. Thanks. RADIANS and DEGREES are easily converted between each other.
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