Joey cut a 10.5 foot long length of rope into 6 pieces of equal length. how long was each piece of rope

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Afarmer has a large field that is x feet in length. he wants to fence in a rectangular section in the middle of the field , leaving a length of 100 feet of open field behind each end of the fenced rectangle.he also wants the width of the fenced-in space to be 100 feet less than its length. find the expressions to represent the length and width of the fenced section of the field

If value of cos330° is √3/2 then find tan165°.