Calculus essentially takes the fundamentals of algebra and extends them to include rates of change between quantities. The concepts are taught entirely through step-by-step example problems of increasing difficulty. It works by introducing each new concept in an easy to understand way and using example problems that are worked out step-by-step and line-by-line to completion. This lesson teaches students how to use trigonometric substitutions to solve integrals. Many examples are provided that teach how to recognize these integrals, set up the substitution properly, and carry out the integration. In addition, the relevant trigonometric identities are reviewed which are of help in these problems. Teachers User Instruction & Resource Guide - Includes Recommended books & Calculus Websites.