Question: answer 1 + cos(z) 3 (A) If z is the interval (, 27r) then cos(z) = / > 3 1 (B)1f - s the interval

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1 + cos(z) 3 (A) If z is the interval (, 27r) then cos(z) = \\/ > 3 1 (B)1f - s the interval (m, o, then sin( %) = / + 2@ (C) For z in the interval [0, 721'] T = :31- is the only solution to the equation 2 cos(Za:) 1=0 (D) For z in the interval [0 W , T = 76T is the only solution to the equation 2 cos(4z) +1 =0 15] Which of the above statement(s) is/are true: N

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