I need help in trigonometry :S

1. Oct 14, 2008

Jerina

i got to find the sin and cos of cylinder. in the cylinder system plz help me

2. Oct 14, 2008

nkks

your question is not clear jerina.

3. Oct 14, 2008

Jerina

i got to find the Cylindrical coordinates :s sorry

4. Oct 14, 2008

nkks

I'm sorry,I think it deals with higher mathematical trigonometry.I know few about sin & cos but like sinx & cosx and there calculation like how to find the reasonable range of x ;in sinx+cosx=sin2x

5. Oct 14, 2008

Staff: Mentor

I'm guessing that you need to find the cylindrical coordinates for a cylinder, but you haven't told us anything about the cylinder you're working with. A point in cylindrical coordinates is an ordered triple of numbers, (r, $$\vartheta$$, z).

For a vertical cylinder of radius a whose center axis lies along the z-axis, the equation is very simple: r = a. Every point (r, $$\vartheta$$, z) on this cylinder will have an r value of a.

6. Oct 14, 2008

Jerina

[/PLAIN] [Broken] like that or that [/PLAIN] [Broken]

Last edited by a moderator: Apr 23, 2017 at 4:28 PM
7. Oct 14, 2008

Staff: Mentor

[/PLAIN] [Broken]
Like the first one. The second one shows spherical coordinates.

Last edited by a moderator: Apr 23, 2017 at 4:28 PM
8. Oct 14, 2008

jacobrhcp

you should show some sincere work before you ask anyone for help.