python math problem

From	Kene Meniru <Kene.Meniru@illom.org>
Subject	python math problem
Followup-To	gmane.comp.python.general
Date	2013-02-15 14:39 -0500
Organization	illom.org
Newsgroups	comp.lang.python
Message-ID	<mailman.1839.1360957179.2939.python-list@python.org> (permalink)

Followups directed to: gmane.comp.python.general

Show all headers | View raw

I am trying to calculate the coordinates at the end of a line. The length 
and angle of the line are given and I am using the following formula:

x = (math.sin(math.radians(angle)) * length)
y = (math.cos(math.radians(angle)) * length)

The following are sample answers in the format (x, y) to the given 
length/angle values of the line:

120/0  = (0.0, 25.0)
120/89 = (24.9961923789, 0.436310160932)
120/90 = (25.0, 1.53075794228e-15)
120/91 = (24.9961923789, -0.436310160932)

Why am I getting a string number instead of the expected answer  for 120/90 
which should be (25.0, 0.0). This happens at all multiples of 90 (i.e. 180 
and 270)

-- 

Kene
::::::::::::::::::
KeMeniru@gmail.com

Back to comp.lang.python | Previous | Next — Next in thread | Find similar | Unroll thread

Thread

python math problem Kene Meniru <Kene.Meniru@illom.org> - 2013-02-15 14:39 -0500
  Re: python math problem John Machin <sjmachin@lexicon.net> - 2013-02-15 18:51 -0800

csiph-web