Use the information given about the angle 0, cos 0=

Use the information given about the angle e, cos B to find the exact values of the following (a) sin (26) (b) cos (20) (c) sin (d) cos (a) sin (2B) - (Type an exact answer, using radicals as needed) (b) cos (2B) - (Type an exact answer, using radicals as needed.) (c) sin (d) cos (Type an exact answer, using radicals as needed ) (Type an exact answer, using radicals as needed )