Precalculus: Mathematics for Calculus, 7th Edition

Published by Brooks Cole
ISBN 10: 1305071751
ISBN 13: 978-1-30507-175-9

Chapter 11 - Section 11.5 - Rotation of Axes - 11.5 Exercises - Page 823: 7

Answer

$(1.6382,1.147)$

Work Step by Step

Given: $(x,y)=(0,2)$ and $\phi =55^{\circ}$ The polar equation for x-component along X-axis is given as: $X=x \cos \phi+y\sin \phi=0 +(2)\sin 55^{\circ}\\=2(0.8191)\\=1.6382$ The polar equation for y-component along Y-axis is given as: $Y=-x \sin \phi+y\cos \phi=0+(2)\cos 45^{\circ}\\=2(0.5735)\\=1.147$ Thus, $(X,Y)=(1.6382,1.147)$
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