The fixed x and y-axes of a right-hand reference frame are specified as horizontal and vertical, respectively, and the origin is coincident with o , that is, the ground pivot of the input link 2. the 2 orientation of the ground link o o relative to the x-axis is 2 4 1θ= ° 15 counterclockwise; that is, oriented above the x-axis. for the posture where the input angle 2 θ = 30 counterclockwise from the x-axis, determine the postures of the coupler link 3 and the output link 4 for the open and crossed postures of the four-bar linkage using the following three methods: (i) graphical (make a scale drawing and measure the angles); (ii) trigonometry (the sine rule and cosine rule); and (iii) the newton-raphson numerical technique. compare the answers that you obtain from the three methods.