Use the law of sines to find the length of side c

C

Step-by-step explanation:

Using the law of Sines in ΔABC

= , that is

= ( cross-  multiply )

c × sin42° = 37 × sin41.5° ( divide both sides by sin42° )

c = ≈ 36.64 ( to 2 dec. places )

d

step-by-step explanation:

option (b) is correct

step-by-step explanation:

to find the solution of this system, we need to convert it into reduced row-echelon form. we have,

after applying row operations r2 -> r2/2 and r3 -> r3/3, we get,