Answers edited by Zach S.

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• What is #cot^4theta/(1-cos^4theta)# in terms of non-exponential trigonometric functions?
  
• How do you evalaute #\frac { 13} { 15} \div \frac { 2} { 5}#?
  
• How do you solve #-7sqrt(3x-8)+3=-4x+7#?
  
• 15 names are in a hat, 6 girls and 9 boys. What is the probability of drawing, without replacement, two girls names in a row?