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sin(theta)/1-cos(theta)=cot(theta) + csc(theta) *I keep getting cos(theta)+1/sin(theta) instead of minus -1? A coin with P (Head) =0.6 is tossed twice. What is the probability that at least one head occurs? How the spacecraft controlled in zero gravity? When calculating margin of error for confidence intervals of population mean, when would you use T statistics versus z? What is clasification of maize?