Verify the identity. csc e• cos tan 0=1 Which of the following four statements establishes the identity? 1 O A. csc 0• cos 0 tan 0= cos e = 1 sin 0 • cos 0. cos e 1 B. csc 0 cos 0 tan 0 = sin 0 • cos 0. sin 0 = 1 cos e 1 O C. csc 0 cos 0 tan 0= sin 0 • cos 0. cos e = 1 cos e 1 D. csc e• cos 0 tan 0= cos e • cos 0. sin 0 = 1 sin 0

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