Answer:
20%
Step-by-step explanation:
2.5 min =(60×2.5)sec=150 sec
30sec to 150sec=30×100/150=20%
Answer:
B
Step-by-step explanation:
This answer shows values of -2, and less than -2
The Law of Sines says
![\dfrac{\sin A}{a} = \dfrac{\sin B}{b} = \dfrac{\sin C}{c}](https://tex.z-dn.net/?f=%5Cdfrac%7B%5Csin%20A%7D%7Ba%7D%20%3D%20%5Cdfrac%7B%5Csin%20B%7D%7Bb%7D%20%3D%20%5Cdfrac%7B%5Csin%20C%7D%7Bc%7D)
![\sin A = \dfrac a b \sin B](https://tex.z-dn.net/?f=%5Csin%20A%20%3D%20%5Cdfrac%20a%20b%20%5Csin%20B)
![A = \arcsin( \dfrac{782}{1435} \sin 115.6 ) = 29.44^\circ](https://tex.z-dn.net/?f=A%20%3D%20%5Carcsin%28%20%5Cdfrac%7B782%7D%7B1435%7D%20%5Csin%20115.6%20%29%20%3D%2029.44%5E%5Ccirc)
We don't have to worry about the obtuse supplement because a triangle can only have one obtuse angle, and that's B.
![C = 180 - 115.6 - 29.44 = 34.96^\circ](https://tex.z-dn.net/?f=C%20%3D%20180%20-%20115.6%20-%2029.44%20%3D%2034.96%5E%5Ccirc)
Answer: A=29.44°, C=34.96°