Find BC
AC^2=AB^2+BC^2
20^2=16^2+BC^2
400=256+BC^2
BC=√(400-356)
BC=12
Use SOHCAHTOA
Sine A=12/20=3/5
COS A=16/20 =4/5
TAN A=12/16 =3/4
Answer:
3
Step-by-step explanation:
the answer is D. 6 ≤ x < ∞
2,4,7,8,14,and 28
