Convert from polar to rectangular coordinates (15,/6) (Round your answer to 2 decimal places where needed.) x= y= Convert from polar to rectangular coordinates (4,3/4) (Round your answer to 2 decimal places where needed.) x= y= Convert from polar to rectangular coordinates (0,/4) (Round your answer to 2 decimal places where needed.) x= y= Convert from polar to rectangular coordinates (5,−/2) (Round your answer to 2 decimal places where needed.) x= y=