Answers created by John G.

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• How do you use a calculator to evaluate #sec225^circ#?
  
• Does the speedometer of a car read average speed or instantaneous speed? How do you know?
  
• Prove this is an identity? 1-sinx=1-sin²(-x)/1-sin(-x)
  
• I need help with part #\ \ b)...#?
  
• How do you graph #2x+3y>4# on the coordinate plane?
  
• Let f(x) = x2 − 4 and g(x) = 4x − 3, how do you find (f − g)(−6)?
  
• What is the equation of the parabola that has a vertex at # (45, -6) # and passes through point # (31,-29) #?