Answer:
The first 50 widgets for $2
Step-by-step explanation:
50/2=25
120/6=20
200/9=22.22 repeating
cos x ≠ 0 ⇔ x ≠ ; k ∈ N
<=> cos²x + sin²x = 1
⇔ 1 = 1
=> x = { R \ (pi/2 + k.pi); k ∈ N}