The correct question is, Why (or when) is it useful to view [math]\cos^2(x)[/math] as a composite function? In calculus, it is useful when taking the derivative of [math]f(x) = \cos^2 x[/math] to recognize that [math]f(x)[/math] is a composition of two functions whose derivatives we (presumably) already know.
In law, fraud is deliberate deception to secure unfair or unlawful gain. Fraud is both a civil wrong (i.e., a fraud victim may sue the fraud perpetrator to avoid the fraud and/or recover monetary compensation) and a criminal wrong (i.e., a fraud perpetrator may be prosecuted and imprisoned by governmental authorities).n common law jurisdictions, as a criminal offence, fraud takes many different forms, some general (e.g., theft by false pretense) and some specific to particular categories of victims or misconduct (e.g., bank fraud, insurance fraud, forgery).
Fraud in the Factum is a type of fraud where misrepresentation causes one to enter a transaction without accurately realizing the risks, duties, or obligations incurred. This can be when the maker or drawer of a negotiable instrument, such as a promissory note or check, is induced to sign the instrument without a reasonable opportunity to learn of its fraudulent character or essential terms.