I found this to help u if not here's the link: https://math.wonderhowto.com/how-to/prove-triangle-inscribed-circle-is-right-angled-340340/
it has a video to show u how to do it
Answer:

Step-by-step explanation:
Given
See attachment
Required
Vertical length / Horizontal length
From the attachment, we have:
--- the vertical length of the larger triangle
and
--- the horizontal length of the larger triangle
So, the ratio is:



Divide by 2

Answer:
Therefore the Equation and missing value is
.............Equation for the Diagram

Step-by-step explanation:
Given:
Let Label the Diagram such that



To Find:
Equation =?
x = ?
Solution:
Here Total Length is given in Two Parts



For a Line A-B-C
..............Line Addition Property
Substituting the values we get
...Equation for the Diagram

Therefore the Equation and missing value is
...Equation for the Diagram
