Re: Would someone be so kind as to help me with a math equation?

From: Dark Alchemist (GhostOfACPast_at_gmail.com)
Date: 01/01/05 

Date: 1 Jan 2005 02:45:22 -0800

No none of the formulas given work in the way I need them.

Its probably me not explaining and not understanding but let me try and
explain it one last time using BASIC code.

for A = 0 to 512
X = sin(A)
Y =
next

Now if you look I have not defined Y because for all intents and
purposes Y cannot see A. It can't use A to simply COS(A) because it can
only see X which ranges from -1 to 1 (the product of SIN). Now I need
a formula that only cares about X (the finished product of the SIN
function) and will turn it into a COS. The half angle formula (Y =
sqrt(1 - X^2)) works but it will never give me the proper sign (it is
always positive) for Y because of the squaring. Isn't there a formula
that will work like the half angle formula while also giving me the
proper sign (a true COS derived from the out of the product of SIN)?
Thank you to all who are trying to help me. :)

Relevant Pages

  • Re: Why do the Mormons bother with this newsgroup?
    ... >>> math that got me What I DID enjoy ... >> sinning is independent of whether he did so on the previous day. ... but sin much more on one day than the other. ... most of us have moral understanding ...
    (uk.religion.christian)
  • Re: Why do the Mormons bother with this newsgroup?
    ... > and immediately being hit with the old "lies, ... Where would the sin lie in aiming the ... >> how does the kid get taught that it's not nice to hurt people? ... >> understanding, they can be held accountable only to that level, ...
    (uk.religion.christian)
  • Re: Why do the Mormons bother with this newsgroup?
    ... >> I know many who have avoided offending God. ... >> God built offense into him; the child cannot sin, ... understanding" that makes a sin. ... simply not possible...and THAT understanding is a pretty heady one, ...
    (uk.religion.christian)
  • Re: Why do the Mormons bother with this newsgroup?
    ... > Phil Saunders wrote: ... At what age does a child gain the ability to choose ... > understanding" that makes a sin. ... > simply not possible...and THAT understanding is a pretty heady one, ...
    (uk.religion.christian)
  • Re: Would someone be so kind as to help me with a math equation?
    ... >I am trying to convert a sin into a cos but all I could come up with ... > was the half angle formula which does not give me any negatives. ... Some reason you don't just use the inverse trig function for sin? ... Brian ...
    (sci.math)
Loading