is a trigonometric rule used to calculate the length of a side or the size of an angle in a non right-angled triangle. The rule states that the square of any side equals the sum of the squares of the other two sides less twice the product of the other two sides and the cosine ratio of the angle between those two sides.
a polygon formed by joining the midpoints of the top of the columns of a histogram.
a value towards which a sequence or series tends; or a position towards which a line moves.
states that a line drawn parallel to one side of a triangle divides the other two sides...
the range of values (class) that is most commonly found in a data set.