Tell whether you would use the Law of Sines or the Pythagorean Theorem and trigonometric functions to solve the triangle with B=90 degrees, a=15, and c=6. Please help me

First work with stencil one. use a combination of reflections, rotations, and translations to see whether stencil one will overlap with the original pattern. list the sequence of rigid transformations you used in your attempt, noting the type of transformation, the direction, the coordinates, and the displacement in