let the plane is flying at some angle theta with west towards north
Now we can use the components
now since plane has to fly towards west so net speed in north must be equal to speed in south for air
So we can say
so plane has to fly in direction 14.5 degree North of west
False, the ice box was invented in the 1930's, the earliest for of food preservation was probably a shaded place, cave or smoking the food. the earliest forms of food preservation are hard to prove and I don't know what they are either I was just making and educated guess.
Answer is a Poor Cluster.