The title and description of this problem have been cleaned up. Also, its test suite has been expanded and improved.
Angle between Two Vectors
Make a random, non-repeating vector.
CONVERT TAN TO SIN
Convert array of decimal numbers into binary numbers array.
Find sum of negative elements in row.
Calculate the sum of elements of n*n Hilbert matrix.
Solve expression I
Divide polynomial p1 by p2.
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