How does it happen ,MathSin() usage?

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I would like this:

For MathSin distance calulation.
I have one point .This is the zero point.The zero point Bars number is 1000.
The Point 1 Bar number is 1050,the price is :High
The Point 2 Bar number is 1050,the price is :Low
I would calculate in zero point the sinus (for degrees)
How it possible?How can i define 0 and 1 point width,and 0 and 2 point width.


Thank for your help