Answer:
i think it is the first one
Step-by-step explanation:
x =
Cos 45= 12/x
x=12/Cos 45
x=
ek dam fine
complimentary angles, when added = 90 degrees
69 + 5n + 1 = 90
5n + 70 = 90
5n = 90 - 70
5n = 20
n = 20/5
n = 4 <====
