Answer:
42.6 degrees
Step-by-step explanation:
A supplementary angle is one that adds to the other one so the sum is 180 degrees. So 180-137.4=42.6
25
9514 1404 393
14
Use the formula with n=3.
h(3) = h(3-2) +h(3-1)
h(3) = h(1) +h(2)
h(3) = -6 +20 . . . . . substitute the given values
h(3) = 14
