Answer: you will use the cosine rule
Step-by-step explanation:
x^2=11^2+8^2-2(11)(8)xcos(16)
x^2=185-169.18
x^2=15.8
Take square root
x=3.96 or 4
Yo sup??
You can solve this problem by applying the cosine rule ie
a²=b²+c²-2bccosx
x²=11²+8²-2*11*8cos16
=121+64-169.2
=15.8
x=√15.8
=4 (approx)
Hope this helps.
