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

1. amistre64

cyl is what; radius rotate and up?

2. amistre64

3. amistre64

gonna have to read up on it ro refresh :)

4. anonymous

what is -4?is it in radians?

5. amistre64
6. amistre64

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

7. anonymous

yes, but cant figure out the -4

8. amistre64

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

9. amistre64

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

10. anonymous

i couldnt plot it, tried to see where it is

11. anonymous

coudn't figure it out

12. amistre64

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

13. amistre64

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

14. anonymous

thank you for help!

15. amistre64

yw