The document provides examples of applying trigonometric laws like the law of sines and tangent theorem to solve for unknown sides and angles of triangles. It first shows using the law of sines to find the length of one side of a triangle given the other two sides and their opposite angles. It then demonstrates applying the tangent theorem to calculate all angles and the remaining side of a triangle when given two sides and one angle. Finally, it solves another triangle using the tangent theorem to find the remaining angle and one side when three parts are known.