I think I know this but I need a picture of it
Answer:
approximately 6.5574385243
Step-by-step explanation:
angle A = 30
(2x-9) = (2x+21)
+9 +9
2x=2x+30
-2x -2x
=30
Answer:

Step-by-step explanation:
The answer is clear once you graph it. You can use a graphical calculator or the online graphing calculator Desmos.