Use Pythagoras theorem
![{(6 + 3)}^{2} + {x}^{2} = {15}^{2} \\ {x}^{2} = 144 \\ x = 12](https://tex.z-dn.net/?f=%20%7B%286%20%2B%203%29%7D%5E%7B2%7D%20%20%2B%20%20%7Bx%7D%5E%7B2%7D%20%20%3D%20%7B15%7D%5E%7B2%7D%20%20%5C%5C%20%20%7Bx%7D%5E%7B2%7D%20%20%3D%20144%20%5C%5C%20x%20%3D%2012)
Two triangles are similar
![\frac{6}{9} = \frac{y}{12} \\ y = 8](https://tex.z-dn.net/?f=%20%5Cfrac%7B6%7D%7B9%7D%20%20%3D%20%20%5Cfrac%7By%7D%7B12%7D%20%20%5C%5C%20y%20%3D%208)
(6+3)*12/2 - 6*8 /2 = 30
The answer is -6. Thought there is a chance I am wrong. Need an explanation?
The one you have highlighted is correct
Answer:
x = 53 degree
Step-by-step explanation:
53 degree angle = x angle( alternate exterior angle)
Therfore, x = 53 degree
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