dentities. 13 of using Other directions and hints: This DQ is very similar to Example 5 and the subsequent Progress Check in Section 8.3 of the LabBook (text). Use this Example and/or Progress Check to help you explain how to find the exact value of the given expression using "Method 2: Using Identities." You must show the method of using identities in your DQ Response. You will not receive any credit if you use any other method (such as sketching right triangles) in your DQ Response. However, it is a good idea to check your final answer on your own by using the method of sketching right triangles. Do NOT show this check in your DQ Response.