Use the quotient, reciprocal, or the Pythagorean identities to simplify each expression to a single trigonometric function or number. 1) cot sin 0 = 2) tan csc 0 = 3) sec cos 0 = 5) sec cot 0 cos e = I sec 0 4) (csc + 1) (csc 0 - 1) = 1

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