如何以一定角度移动物体？

Question

I wont to move my Object(has {x:10,y:15}) with an angle off 20° Exmaple PIC: https://cdn.discordapp.com/attachments/591642374376259593/602618211040493568/unknown.png

let plus = {
   x: Math.cos(this.angel),
   y: Math.sin(this.angel)
}
this.x += plus.x
this.y += plus.y

I expect an velocity like {x:2.5,y:3}

Answer 1

let angle = 20;

You need to convert angle into radians

let radians = angle * (Math.PI / 180);

Then use that to find x and y

let plus = {
   x: Math.cos(radians),
   y: Math.sin(radians)
}

this.x += plus.x
this.y += plus.y

The angle 0 degree is at 3 o'clock and 90 degree is 6 o'clock and so on.

If you want the angle in the drawing then

let angle = 90 - 20;