Torque Calculation Example - wrench

When tightening a bolt, you push perpendicularly on a wrench with a force of 165 N at a distance of 0.140 m from the center of the bolt. (a) How much torque are you exerting in newton × meters (relative to the center of the bolt)? (Problem adapted from OpenStax)

[@GriffithNeumann]

Where is the -90 coming from 😮