[TheForge] Math

[Demon Buddha]

On Sat, 13 Sep 2003 11:01:16 -0700, A. Vida <osan@netlabs.net> wrote:

>
>
> Michael Wolfe wrote:
>>
>> I need to figure the amount of lean in inches, I would
>> get on a 12 foot post that is leaning 3 degrees.
>> Or if you know the formula for one degree I could
>> figure the actual lean when I go on site and it really
>> is 4.5 degrees...
>
> 	Sin(theta) = y/r
>
> We know the angle theta (3*) and the radius vector (12).
>
> Sin(3) == .05234 - give or take
>
> You wish to find the value of y.  Isolating y, multiply both sides of
> the
> equation by r.  r divides out on the right side.
>
> 	r * sin(theta) = y
>
> 	12 * .05234    = y
> 	
> 		.628   = y - or about 5/8"

	Bog OOPS... that should be 5/8 FEET, not inches.

	Sorry about that.S