If you go to Wells Fargo and apply for a home loan, for example, they will conduct a thorough examination of your credit and financial background. They do this to determine whether or not you're a good candidate for a loan. As a whole, this process is referred to as mortgage underwriting, and it has many steps.
Definition of cosine for English Language Learners. geometry : the ratio between the long side (called the hypotenuse) and the side that is next to an acute angle in a right triangle.
Note that this ratio does not depend on the particular right triangle chosen, as long as it contains the angle A, since all those triangles are similar. The cosine of an angle is the ratio of the length of the adjacent side to the length of the hypotenuse.