a) Convert the point whose polar coordinates are (4, 5pi/4) to rectangular coordinates.

Algebra and Trigonometry (MindTap Course List)
4th Edition
ISBN:9781305071742
Author:James Stewart, Lothar Redlin, Saleem Watson
Publisher:James Stewart, Lothar Redlin, Saleem Watson
Chapter8: Polar Coordinates And Parametric Equations
Section8.CT: Chapter Test
Problem 8CT
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(a) Convert the point whose polar coordinates are (4, 5pi/4) to rectangular coordinates.

(b) Find two polar coordinate representations for the rectangular coordinate point (−9, sqrt3), one with r > 0and one with r < 0 and both with 0 ≤ ? < 2?.

r > 0     (r, ?)  =
r < 0     (r, ?)  = 
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