Shown below is cross-section of a water-filled tank. One of its walls is inclined at an angle of θ=35. A rectangular porthole window is built in to the inclined wall, its center is at a depth of d=3 m, with width a=1.9 m and height b=1.7 m. Specific weight of water is γ_water=9.81 kN/m^3. Determine the resultant force acting on the rectangular view port.