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**model****Member**- Registered: 2011-08-10
- Posts: 142

Hi all,

Say my finger location is x1 = 236 , y1 = 105 , x2 = 126, y2 =123 .

where

x1.y1 ==> current location and

x2,y2==> previous location

And i have distance computed using

dis = sqrt( (x2-x1)^2 - (y2-y1)^2 )

say angle is 60 degree .

Now, How far my finger move w.r.t its angle and what is its spead at given time 1sec ???? ?

Maths is Doctor that make our life easy ..

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**bob bundy****Moderator**- Registered: 2010-06-20
- Posts: 6,870

hi model,

I've made a diagram from what you have posted. see below.

It is NOT accurately to scale. But I have calculated the angles accurately using those co-ordinates.

No 60 degrees. Where does that come from?

And where does 1 sec come from? Is this the time taken to move from the previous location to the current location?

I'm not sure what you want help with.

Bob

You cannot teach a man anything; you can only help him find it within himself..........Galileo Galilei

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