Answer:
-5 + 6 = 1
Step-by-step explanation:
The model number may be used to simplify -5 + 6 = 1
x=7.8
take 49 degree as reference angle
using cos rule
cos 49=adjacent/hypotenuse
0.65=x/12
0.65*12=x
7.8=x
50 + 200h