Answer:
x ≈ 54.5°
Step-by-step explanation:
Using the cosine ratio in the right triangle
cos x = = , then
x = ( ) ≈ 54.5° ( to the nearest tenth )
1. As M is the midsegment JM / JK = 1/2
By similar triangles JM/JK = 1/2 = x / 12
2x = 12 so x = 6 answer
2. By the same reasoning as above
x / (x + 9 ) = 8.5 / 17 = 1/2
2x = x + 9
x = 9
Answer x = 9