Find the cylindrical coordinates of the points where the Cartesian coordinates are :
(√5, 1,2)
Cylindrical coordinates (r,θ,z).(r,\theta,z).(r,θ,z).
r=x2+y2=52+12=6.r=\sqrt{x^2+y^2}=\sqrt{\sqrt{5}^2+1^2}=\sqrt{6}.r=x2+y2=52+12=6.
θ=arctanyx=arctan15=0.4205.\theta=arctan{\frac{y}{x}}=arctan{\frac{1}{\sqrt{5}}}=0.4205.θ=arctanxy=arctan51=0.4205.
z=z=2.z=z=2.z=z=2.
Cylindrical coordinates: (6,0.4205,2).(\sqrt{6},0.4205,2).(6,0.4205,2).
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