Answer: Pythagorean theroem
Step-by-step explanation:
The easiest method to use in terms of a missing side as long as you know at least two other variables whether its another side or angle
To get rid of the 3.8, we add it.
1.2w - 3.8 + 3.8 = 12.4 + 3.8
1.2w = 16.2
