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Evaluate cos [tan -(1) - cos-(-?3/2)].(1) If cos x = -1/2 with in Qll...

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Algebra

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Evaluate cos [tan -(1) - cos-(-?3/2)].(1) If cos x = -1/2 with in Qll then find sin(x/2).(2) Solve for 0 ? ? < 2? : 4sinx - 2cscx = 0 (3)Solve for 0 < ? <360 : 2sinx + cotx - cscx =0

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