4. Find the missing parts of the triangle. Round to the nearest tenth when necessary or to the nearest minute as appropriate. C = 119.90
a = 4.7 km
b = 8.1 km

The missing parts of the triangle are , and , respectively.

Step-by-step explanation:

A triangle is formed by three sides and three angles, a side and two angles are missing (, , ).

The length of the missing side is found by the Law of Cosine:

(1)

(, , )

And the missing angles can be determined by the Law of Sine:

(, , , )

The missing parts of the triangle are , and , respectively.

for future students the answer is b

hope i

-lavira: )