Verify the identity. Cos 0. csc 0 . tan 0=1 Which of the following four statements establishes the identity? COS U O A. cos 0. csc 0 . tan 0 = cos 0. - sin 0 sin 0 = 1 O B. cos 0 . csc 0 . tan 0= cos 0. sin 0 = 1 COS O COS O C. cos 0 . csc 0 . tan 0 = cos 0. 1 sin 0 sin 0 =1 COS O COS O O D. cos 0. csc 0 . tan 0 = cos 0. COS U sin 0 =1