The answer to the following equation is the first one.
Answer:

Step-by-step explanation:
To convert from degrees to radians
radian = degree measure 
= 510 × 
= 
=
radians
Answer:
b, a, c
Step-by-step explanation:'
The side opposite of the smallest angle(50) is always the smallest, which means b is the smallest
Hope this helps!
Answer:
BC is equal to 7
Step-by-step explanation:
18 = 2x + 4
18 - 4 = 14
14 = 2x
14/2 = 7
7 = x