Answer:
a=41.8 BC=2.8
Step-by-step explanation:
sin30/6=sinx/8
8*sin30=6sinx
4=6sinx
sin^-1(4/6)
angle a
cosine rule
bc^2=3^2 +5^2-2(3)(5)*cos30
BC^2=
BC=2.83
2.8
You need to know if it has at least 2 equal angles. Or you need to know if it has an equal angle and if its two correspondent sides are in the same ratio. Or if its three sides are in the same ratio
16 1/4 can also be 16 2/8. which they are common fractions