Tan M = opposite / adjacent
tan M = KL / KM
tan M = 15/8
Letter C
It is not a function because there can't be two of the same number on the x-axis.
Mode = number which appears the most
The mode for your question is 5
Let X represent the length of the chord.
By using Pythagoras' Theorem:
4^2 + (X/2)^2 = 15^2
(X^2)/4 = 209
X^2 = 836
X = 28.91
