Trigonometric Substitution. I can apply trigonometric substitution as needed. All the for- mulas we learned in the table of integrals involving inverse trigonometric functions can be derived using trigonometric substitution. Criteria for Success: I can . identify the correct trigonometric substitution . perform trigonometric substitution as needed Question: The following integral can be easily solved with a regular u-substitution. I would like you to perform trigonometric substitution however. Stop once the integral is written in terms of the angle d. Clearly state what x and dex are in terms of A. V16x4 + 49dx =