First, it is important to understand the terms used in the problem.
The Arithmetic Mean: (this is the mean we are used to seeing)
(n= number of variables, in this case n=3)
To Find the Geometric Mean of n #'s:
(n= number of variables, in this case n=2)
So, using this information we can find the geometric mean of 6,7 by plugging them into the equation as "a" and "b". n=2 (when n=2 a square root can be used)
So the answer in this case is A.
The attached image may have what you are looking for.
Tan=y/x and cos=x/r and sin=y/r
If y/x=12/5, then y=12.
If x/r=-5/3, then x=-5
Therefore, sin theta would equal 12/3
A = (pie)r^2
A= (pie)1.5^2
A= 7.07(pie)
Hey there, Valensolar! I would usually explain my answer, but in this case, I cant use any of the symbols required. But the answer is no. The number 1 can NOT be an additive identity. I hope this helps! :D