For each of the following problems , solve using the Loop Closure Position Vector Constraint* Equation Method with the following { Steps . 1 . Write vector position loop equation 2 . Define local coordinate frames by local unit vector directions ( In , In ) attached to each moving link . 3. Identify constraints on lengths and / or directions , and write vector position equation. in terms of local unit vector directions . 1. Write closed - loop position vector equation with local unit vectors expressed in common fixed frame coordinates ( 7 , ] ) 5. Equate components in { and } directions to generate ? scalar equations and identify 2 scalar unknown orientation angles and / or variable distances for sliders . 6. Solve the two equations for the unknowns . Set- up equations on calculator and ask to solve for the ? unknowns . You can use trigonometry of triangles to check your solutions