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Use a sketch to find the exact value of the following expression. tan cos - 19 Which of the following triangles is used to find the exact value of the given expression? O A. O B. O C. (3,y) Ay OD. 1= (x,3) Ay =5 (3.5) X y = 3 (5,3) X =3 X r y = 5 X =3 X =5 tan cos = =(Type an integer or a simplified fraction.)Solve the right triangle shown in the figure. B A = 50.2", c=52 A b C a. What are the lengths of the sides? (Round to the nearest hundredth as needed.) ba (Round to the nearest hundredth as needed.) b. What are the angles? B = (Round to the nearest tenth as needed.) C=