Answer:
3
Step-by-step explanation:
f(3)=2(3)-3
You just plug in the number for the variable.
Remark
You need to start with three facts.
x and y are complements which means that x + y = 90
Sin(x) = cos(90 - x)
<CPN = <DPN Definition of a bisector.
From the 3 facts above, we can gather than
CPN + y = 90
Therefore the cos of CPN = Sin(y)
He could do it 12 by 12 by 12 or 6 by 6 by 6 by 6 by 6 by 6 or he could do it 3 by 3 (the number of threes is double of 6
