Trigonometry (10th Edition)

Published by Pearson
ISBN 10: 0321671775
ISBN 13: 978-0-32167-177-6

Chapter 6 - Inverse Circular Functions and Trigonometric Equations - Section 6.3 Trigonometric Equations II - 6.3 Exercises - Page 273: 6

Answer

If this equation has no solution over the interval $[0,2\pi)$, we can conclude that the graph of $~~y = cot~\frac{x}{2}-csc~\frac{x}{2} - 1~~$ does not cross the x-axis over this interval. We can see that the graph of $~~y = cot~\frac{x}{2}-csc~\frac{x}{2} - 1~~$ does not cross the x-axis over the interval $[0, 2\pi)$

Work Step by Step

$cot~\frac{x}{2}-csc~\frac{x}{2} - 1 = 0$ If this equation has no solution over the interval $[0,2\pi)$, we can conclude that the graph of $~~y = cot~\frac{x}{2}-csc~\frac{x}{2} - 1~~$ does not cross the x-axis over this interval. We can graph $~~y = cot~\frac{x}{2}-csc~\frac{x}{2} - 1~~$ to confirm this. We can see that the graph of $~~y = cot~\frac{x}{2}-csc~\frac{x}{2} - 1~~$ does not cross the x-axis over the interval $[0, 2\pi)$
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