What are the cylindrical coordinates of the point whose spherical coordinates are (4, -4, pi/6)

Question

amistre64 · Answer

cyl is what; radius rotate and up?

amistre64 · Answer

up = radius sin(pi/6)  if im reading this right

amistre64 · Answer

gonna have to read up on it ro refresh :)

anonymous · Answer

what is -4?is it in radians?

amistre64 · Answer

http://tutorial.math.lamar.edu/Classes/CalcIII/SphericalCoords.aspx

amistre64 · Answer

sph (radius, theta, phi)  where theta is from the x axis and phi from the z?

anonymous · Answer

yes, but cant figure out the -4

amistre64 · Answer

from (p,t,f) to (r,t,z), this is for my own recollection, lets see if we can get to the -4 :)

r = p cos(f)
t = t
z = p cos(f)

so the -4 is just -4 in both cases

amistre64 · Answer

your not asked to analyse -4, your simply told to put this into cyl coords; so -4 gets transfered as is

anonymous · Answer

i couldnt plot it, tried to see where it is

anonymous · Answer

coudn't figure it out

amistre64 · Answer

and yes, all angles are radian measures at this point unless they specifically tell you otherwise

amistre64 · Answer

$$-\frac{4}{pi}\ pi\ radians$$

anonymous · Answer

thank you for help!

amistre64 · Answer

yw