What is the unit rate of 405 rotations in 5 minutes

If value of cos330° is √3/2 then find tan165°.

Solve the following pair of equations for x and y: ax/b_ by /a= a +b; ax - by = 2ab

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!