For Exercises 3-10, write the product as a sum or difference. (See Example 1) 3x 6. cos-coS- 2 2
For Exercises 3-10, write the product as a sum or difference. (See Example 1) 3x 6. cos-coS- 2 2
Trigonometry (11th Edition)
11th Edition
ISBN:9780134217437
Author:Margaret L. Lial, John Hornsby, David I. Schneider, Callie Daniels
Publisher:Margaret L. Lial, John Hornsby, David I. Schneider, Callie Daniels
Chapter1: Trigonometric Functions
Section: Chapter Questions
Problem 1RE:
1. Give the measures of the complement and the supplement of an angle measuring 35°.
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Question
![### Exercise Instructions: Trigonometric Identities
#### Section 5.4, Page 605, Exercises #6, 12, 20
**For Exercises 3–10**, write the product as a sum or difference. (Refer to Example 1)
**Exercise 6:**
\[ \cos \frac{x}{2} \cos \frac{3x}{2} \]
---
**In Exercises 11–14**, use a product-to-sum formula to find the exact value. (Refer to Example 2)
**Exercise 12:**
\[ \sin 82.5^\circ \cos 37.5^\circ \]
---
**For Exercises 19–22**, write each expression as a product. (Refer to Example 3)
**Exercise 20:**
\[ \sin 30^\circ + \sin 10 \theta \]](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F231fae22-ac62-4382-9eb0-95d912af77d1%2F26c3f6d6-7f8c-4746-aee0-c84070097686%2Fadug518.jpeg&w=3840&q=75)
Transcribed Image Text:### Exercise Instructions: Trigonometric Identities
#### Section 5.4, Page 605, Exercises #6, 12, 20
**For Exercises 3–10**, write the product as a sum or difference. (Refer to Example 1)
**Exercise 6:**
\[ \cos \frac{x}{2} \cos \frac{3x}{2} \]
---
**In Exercises 11–14**, use a product-to-sum formula to find the exact value. (Refer to Example 2)
**Exercise 12:**
\[ \sin 82.5^\circ \cos 37.5^\circ \]
---
**For Exercises 19–22**, write each expression as a product. (Refer to Example 3)
**Exercise 20:**
\[ \sin 30^\circ + \sin 10 \theta \]
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