Answer:There are two right triangles. You need to find the opposite side (the height) of each of them. The difference between the two is the height of the blade, x.
You know the adjacent, 440, and you are looking for the opposite, so you need to use tan for both.
To answer items such as this, we directly substitute the a + 2 to the all the x's in the function such that, f(a + 2) = (3 + a + 2) / (a + 2 - 3) Simplifying the function generated above, f(a + 2) = (5 + a) / (a - 1)
