Find the value of x.
Side a=14 Side b=11 Side c=19 Angle a= x Angle b= y
a. 17.5
b. 23.2
c. 35.7
d. 46.8
I tried using the Law of Cosine and failed, maybe i did it wrong idk help
Law of cosines.
a^2=b^2+c^2-2cbCosA
14^2=11^1+19^2-2(11*19)CosA
(196-121-361)/(418) =-cosa
cosa=.682
x= arccos(.682)=47 degrees which puts answer d in play.