Final answer:
The vertical component of a force applied at an angle is calculated using the formula Fy = F × sin(θ), where F is the force and θ is the angle with the horizontal.
Step-by-step explanation:
The vertical component of a force that is applied at an angle can be calculated using trigonometric functions. In the situation where a man pulls a wagon with a force of 50 N at an angle θ (which, however, has not been provided in the question), you would use the sine function to find the vertical component (Fy) of the force. The formula to calculate the vertical force component is Fy = F × sin(θ), where F is the total force and θ is the angle of the force with respect to the horizontal plane.