Need some help with maths

Hey,

My character is using a Rigidbody2D (Box2D physics)

On a 45 degree slope, with a gravity of -25, a physical material with 0 friction and no drag, my character slides down continuously at a velocity of 0.5 on X and Y

I'm trying to stabilize my player by adding enough velocity on X to counter the sliding, i have a raycast that gives me the angle or the normal of the slope i'm standing on but i just don't know where to go from there, there has to be a simple equation to get the counter velocity?

Some help would be appreciated

 

Write a simple raycast script to for the rigidbody and zero the velocity when raycast hit's down direction.
Does the controller need a physical material?

 

I'm not sure i understand your suggestion.

I do not want any friction so i have to use a physical material otherwise the friction would default to 0.4.

Friction seems useless, to stop sliding i would have to set it so high that i wouldn't be able to move anymore and stick to walls.