Answer:
5
Step-by-step explanation:
cos 60° = y / 10
y = 10 * 1/2 = 5
6584.22
used a calculator (ti-84 plus tx instruments)
sin 30°=8/c
1/2=8/c
c=16.
tan 60°=b/8
√3=b/8
b=8√3.