1. Distance between 2 points
Hello,
Does any1 know how to calulate the distance and angle from
point A to point B given their coordinates.
Thanks
--PatRat (Thomas Parslow)
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-- Rat Software
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2. Re: Distance between 2 points
On Tue, 29 Sep 1998, PatRat wrote:
> Hello,
> Does any1 know how to calulate the distance and angle from
> point A to point B given their coordinates.
> Thanks
At the risk of answering homework here :)
opposite = b[Y] - a[Y]
adjacent = b[X] - a[X]
distance = sqrt(power(opposite,2)+power(adjacent,2))
angle = arctan(opposite/adjacent)
--
Carl R White
E-mail...: cyrek- at -bigfoot.com -- Remove the hyphens before mailing. Ta :)
Url......: http://www.bigfoot.com/~cyrek/
"Ykk rnyllaqur rgiokc cea nyemdok ymc giququezka caysgr." - B.Q.Vgesa
3. Re: Distance between 2 points
> PS: Do you know what radians are? I know that they are a measurment
> of angle but nothing else.
A circle can be split up in a number of ways. The three most common (found
on any scientific calculator) are Degrees, Radians, and Gradians.
Degrees split the circle into 360 seperate units and Gradians 400
(decimalised: 100grads in a right angle).
Radians are mathematically more useful though, in that a circle is split
into 2*Pi radians. Since a circle's diameter = 2*Pi*Radius, 1 Radian is
the distance equivalent to the radius round the outside of the circle.
Hence the name "radian".
Pi = arctan(1) * 4 = about 3.1416.
A radian is equal to 180/Pi (or 360/(2*Pi), see the relation?) degrees.
That's about 57.2958 degrees in real money.
A gradian = 0.9 degrees. (360/400 or 9/10)
HTH,
Carl
--
Carl R White
E-mail...: cyrek- at -bigfoot.com -- Remove the hyphens before mailing. Ta :)
Url......: http://www.bigfoot.com/~cyrek/
"Ykk rnyllaqur rgiokc cea nyemdok ymc giququezka caysgr." - B.Q.Vgesa
