Find the indicated derivative. Then find an equation of the tangent line at the indicated point on the graph of the function dy/dx if y=9/squareroot x-8. (X, y)=(9,9)

Find the measure of angle y. round your answer to the nearest hundredth. ( type the numerical answer only) a right triangle is shown with one leg measuring 5 and another leg measuring 14. an angle across from the leg measuring 5 is marked y degrees. numerical answers expected!