I'll assume the vector shown with magnitude
We're asked to find the horizontal and vertical components of a force, and the force normal to the incline plane.
The force is at angle of
relative to the horizontal. It has a magnitude of
The force normal to the plane is the vertical component of the force relative to the plane, which is perpendicular to it.
It makes an angle of
Thus, the force exerted normal to the incline plane has a magnitude of