Locate the points given in polar coordinates by P(2, ¹T), Q(2, 5₁), R(3, ½T) 6 among

Calculus: Early Transcendentals
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ISBN:9781285741550
Author:James Stewart
Publisher:James Stewart
Chapter1: Functions And Models
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Problem 1RCC: (a) What is a function? What are its domain and range? (b) What is the graph of a function? (c) How...
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Locate the points given in polar coordinates
by
among
1.
2.
3.
4.
5.
P(2, ¹T), Q(2.5T), R(3, 1⁄2T)
D
Ρ:Δ
P:O
001
P:●
P: A
6. P:O
A.
2
2
-2.
P:● Q:A
Q:●
Q: ●
Q:0
Q:0
Q:A
O
R:O
R: A
R:O
R: A
Ꭱ ;
R:
Transcribed Image Text:Locate the points given in polar coordinates by among 1. 2. 3. 4. 5. P(2, ¹T), Q(2.5T), R(3, 1⁄2T) D Ρ:Δ P:O 001 P:● P: A 6. P:O A. 2 2 -2. P:● Q:A Q:● Q: ● Q:0 Q:0 Q:A O R:O R: A R:O R: A Ꭱ ; R:
Expert Solution
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.

P=\left(r,\:\theta \right)=\left(2,\:\frac{\pi }{4}\right)

r=2,\:\:\theta =\frac{\pi }{4}

.

the x and y coordinates are given by 

x=r\cos \left(\theta \right),\:\:\:\:\:\:\:\:\:y=r\sin \left(\theta \right)

substitute both values

x=2\cos \left(\frac{\pi }{4}\right),\:\:\:\:\:\:\:\:\:y=2\sin \left(\frac{\pi }{4}\right)

x=2\cdot \frac{\sqrt{2}}{2},\:\:\:\:\:\:\:\:\:y=2\cdot \frac{\sqrt{2}}{2}

x=\sqrt{2},\:\:\:\:\:\:\:\:\:y=\sqrt{2}

so the cartesian coordinate is 

{\color{Red} P=\left(x,y\right)=\left(\sqrt{2},\:\sqrt{2}\right)}..............which is a grey circle

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