I dunno how to use Trendline by Angle

 

I was replying to this https://www.mql5.com/en/forum/138726/page2 then I had a question, please reply if you know the answer :

what is the price of the next 15 bars, starting from close bar 7 if price climbing up at 45 degree ?. To answer this you must use trendline by angle object, and please after you put trendline by angle, rescale the chart (zoom in zoom out, scale vertically - horizontally) . Don't forget to mention what symbol and timeframe you use.

:)