Graphs of Sine/Cosine (part 1)

Sine or Cosine?

• y=sinx
• y=cosx

What is the domain and range of y=sinx?

• D: (-∞, ∞)
  R: [-1, 1]
  
• D: (-∞, ∞)
  R: [-π, π]
• D: (∞, -∞)
  R: [-1, 1]
  
• D: (-∞, ∞)
  R: [-∞, ∞]
  

What is the period of y=4cos5x

• 2π/5
• π
• 5
• 5π

Which function represents the graph?

• f(x) = 3 sin x
• f(x) = 3 cos x
• f(x) = sin ( ⅓ x)
• f(x) = sin (3 x)

The period of a function is 

• how long one cycle is before the function repeats
• how high and low the function goes from the center line
• the range of the function

What is the y-intercept of y = cos x?

• (0,0)
• (0,1)
• (0, Pi)
• (1, Pi)