Find the Exact Value $\cos \frac { 3 \pi } { 8 } + \cos \frac { \pi } { 8 }$

question 50

Short Answer

Find the exact value. $\cos \frac { 3 \pi } { 8 } + \cos \frac { \pi } { 8 }$

---

Definitions:

Headings

Short titles used to label sections of a document or webpage, making it easier to read and navigate.

Subheadings

Titles or headings used to organize content into sections within a document or presentation, making it easier to read or understand.

Proofread

The process of reviewing text to correct grammatical, typographical, or spelling errors.

Specific Problems

Particular issues or challenges that are clearly defined and distinct from other issues, requiring targeted solutions.