Question

I have done this twice, and I can't get it!

Two triangles can be formed with the given information. Use the Law of Sines to solve the triangles.

C = 67°, a = 21, c = 20

Answer 1

whats the law of Sins??

Answer 2

These are my choices:


A = 14.9°, B = 98.1°, b = 21.5; A = 165.1°, B = 81.9°, b = 21.5

A = 75.1°, B = 37.9°, b = 13.3; A = 104.9°, B = 8.1°, b = 3.1

A = 75.1°, B = 37.9°, b = 30; A = 104.9°, B = 8.1°, b = 30

A = 14.9°, B = 98.1°, b = 18.6; A = 165.1°, B = 81.9°, b = 18.6

Answer 3

sines

Answer 4

SinA/a=SinB/b=SinC/c