Trigonometry 7th Edition

Published by Cengage Learning
ISBN 10: 1111826854
ISBN 13: 978-1-11182-685-7

Chapter 8 - Section 8.1 - Complex Numbers - 8.1 Problem Set - Page 426: 34

Answer

x=0 And y=$\frac{3\pi}{4}$ 0r y=$\frac{7\pi}{4}$

Work Step by Step

So, $(cos^{2} x+1 ) + i tan y = 2 cos x+i$ Now By comparing the like terms on both sides, we will get $cos^{2}+1 = 2 cos x, tan y=-1 $ => $cos^{2}x−2 cos x+1=0,tan y= -1$ =>$(sinx−1)^{2}=0, tan y= -1$ => cos x =1, tan y=-1 => x=0 and y=$\frac{3\pi}{4}$ 0r y=$\frac{7\pi}{4}$
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.