Pairs Determination for Sine and Cosine Function in Modeling Nigerian Gross Domestic Product

Gross Domestic Product (GDP) is one of the primary indicators that the government, economists and other stake holders use to gauge the stability of a country’s economy. It measures the size of a country’s economy as it represents the monetary value of all goods and services produced over a time period. GDP estimates are commonly used to measure the economic performance of a country and also measure the relative contribution of the industrial sector. In formulating the model, we considered a four pair model, six pair model, and eight pair model. The result shows that at best Nigeria GDP contains four pair of the sine and cosine functions.