Recall that

where
is the angle between the vectors
whose magnitudes are
, respectively.
We have


Answer:
1/6
Step-by-step explanation:
if 1/3 is for a whole batch and you want to make a half batch. So, divide 1/3 by 2.
For #2, ∠3 and ∠1 are supplementary. You know that the measure of ∠1 is 162°, so what is ∠3? 180-162=18.
m∠3=18° if ∠1=162°.
Hope this helped!
Answer:
Hank did. He only paid 3 more cents for 17 ounces so it must be Hank.