It would 180°, since 70°*2=140°, and 140°+40°= 180°.
BC = 6 km
<u>/</u><u> </u> ACB = 34°
AC = ?
cos 34° = 
=> 0.829 = 
=> AC = 
=> AC = 7.23763570567
=> AC = 7 km
=> AC = 10 km
(nearest tenth)

<h3>Answer : 10 km</h3>

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Answer:
I'm guessing D. Hope this helps.
Step-by-step explanation:
Answer:
The ASA Postulate
Step-by-step explanation:
Answer:
B
Step-by-step explanation:
Copy is not a valid one 1⃣ the best