Taylor Series Approximations Using Cosine

The main theme of this project I worked on is to understand how to use the Taylor Series with iteration loops in VBA code. The approximation of cosine using zero is more accurate in some cases than π/4. In this project, I use both approximations and an if-else to choose which errors I want to keep. The colored table under the values shows green for the error values low enough and red for values less accurate. In the third tab, I successfully created more green than red!

Excel file download: http://www.mediafire.com/file/y2l6w8180x588pf/Taylor_Series_Approximation_Bradley_Klawunder.xlsm/file