Use the appropriate reciprocal identity to find each function value. Rationalize denominators when applicable. See Example 1. cos u, given that sec u = - 52

9/19: Chapter 4: 1. Existential statements can be proven by example 2. Universal statements cannot be proven by example 3. An integer n > 1 is prime if its only divisors are 1 and itself (known as trivial factors) 4. An integer n > 1 is composite if it is not prime a. Working definition – Integer n > 1 if there exists...