(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Hi i have a question that how to convert the co-ordinates according to following statement?

Its no difficult to solve the simple conversion but the bold one are confusing me.

A=4x-2y-4z

Transform it into cylindrical co-ordinate system atP (ρ=4, ϕ=120o ,z=2)

B=15x+10y

Transform it into cylindrical co-ordinate system atP(x=3, y=4, z=-1)

2. The attempt at a solution

Equations for converting Cartesian to cylindrical coordinates:

r= [x^{2}+ y^{2}^{1/2}

ϕ= tan^{-1}= y/x

z=z

by putting values

For First question:

r=√20=4.472

ϕ= -26.57

z=-4

For Second question:

r= 18.03

ϕ= 33.69

z=0

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# Homework Help: Co-ordinates transformation

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