the average shower uses 12 gallons of water. how many gallons of water would a person use by taking one shower a day for a year?
1 answer:
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Answer:
C
Step-by-step explanation:
Using the law of cosines then cosΘ is the following quotient
cosΘ =
where a = 5.8, b = 10.5 and c = 10.9
cosΘ =
=
= = 0.21 → C