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Help?Couldn't get it. Find the exact values of sin(u/2), cos(u/2), and tan(u/2) using the half-angle formulas.
cot u = 7, π < u < 3π/2? What is a female fox called? A boat takes 3 hours to travel 30 km down a river, then 5 hours to return. How fast is the river flowing? Two vertical angles have measures of 3x 11 and 7x-5. find the measure of each of the angles? Which substance experiences the greatest surface tension? Hexane, Ethylene, Ammonia, or Pentanol?