There are an infinite number of possibilities for this third length of the triangle. The length can be anywhere in the region .
I seem to have hit a roadblock. I have the length of two sides of a triangle, i want to find the length of the third side. Now let give some additional details.
IT is not a right angle triangle.
I do not have any additional information (like the area,perimeter,angles,etc).
I just have the length of the other two sides, in an excel sheet, is there any formula to find the third side?
Where did this question come from?
And who would ask such a silly question?
No, there isn't.
The third side could be any value from 0 to 21.
thanks guys, No one asked me this question. I am doing some data collecting using GIS software. I have these two sides and was wondering whether there was someway to calculate the third side. If it was a right angle triangle i could have used pythagoras., but alas. thanks guys for your help!!
One way of thinking about this is to start with your original picture.
Now imagine the angle opening and closing. It can close to to angle 0 in which case the "third side" has length 0. It can open to angle 180 degrees in which case the "third side" has length 8+ 13= 21 cm. Of course, those two extreme cases don't really give triangles. That is why the answer is 0< l< 21.
yes i do know that we need either the angle,perimeter or area to get the length, however i was thinking there might be another way you know. Like drawing a circle or something and find the length. thanks a lot guys!