25)+Evaluate+inverse+trigonometric+functions+based+on+principal+values.+(Include+compound+expressions)

**Why Did I Choose This Topic?**
====**//-When we were learning how to do inverse trigonometric functions in class, I did not practice the problems with principal values enough, causing me to get those problems wrong on my test from silly mistakes that could be easily fixed. Through doing this project, I am now able to know how to perform the functions and why they occur.//** ====

**//The normal trigonometric functions sinx, cosx, tanx and their inverses are represented by these tables and graphs://**
Sinx 



Cosx tanx



For example, the inverse graph of tan would look like:



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