Answer:
b = 11.31
a = 12
Step-by-step explanation:
a.
64 + 64 = c^2
c^2 = 128
c = 11.31
answer b = 11.31
b.
soh cah toa
cos = adj/hyp
cos 60 = 6/hyp
hyp = 6/cos 60
hyp = 6/.50
hyp = 12
