Calculus: Early Transcendentals
8th Edition
ISBN:9781285741550
Author:James Stewart
Publisher:James Stewart
Chapter1: Functions And Models
Section: Chapter Questions
Problem 1RCC: (a) What is a function? What are its domain and range? (b) What is the graph of a function? (c) How...
Related questions
Question
Transcribed Image Text:**Question:**
Find the exact value of cos 255°.
**Options:**
- \(\frac{\sqrt{3} - \sqrt{2}}{2}\)
- \(\frac{\sqrt{2} - \sqrt{6}}{4}\)
- \(\frac{\sqrt{2} + \sqrt{6}}{4}\)
- \(\frac{-\sqrt{4}}{2}\)
**Analysis:**
The problem is to determine the exact trigonometric value of cos 255° from the given options. Each option consists of a different mathematical expression, involving square roots and fractions.
Expert Solution
Step 1
Given;
Cos(255).
Step by step
Solved in 3 steps with 2 images
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