### Home > CALC > Chapter 8 > Lesson 8.2.3 > Problem 8-88

8-88.

Examine the derivatives below. Consider the multiple tools available for finding derivatives and use the best strategy. After finding each derivative, write a short description of your method. Homework Help ✎

Use the Quotient Rule.

Use the Chain Rule.

5(cos^{2}(*x*) + sin^{2}(*x*)) = ?