Equations of Trigonometric Functions

What is the equation of the blue graph?

• y = 2sin x
• y = sin(2x)
• y = sin(x + 2)
• y = sin x - 2

What is the equation of the blue graph?

• y = 4sin x
• y = sin(4x)
• y = sin(x + 4)
• y = sin x + 4

What is the equation of the blue graph?

• y = sin(x - π/2)
• y = sin(x + π/2)
• y = π/2 sin x
• y = sin x - π/2

Sine or Cosine?

• y=sinx
• y=cosx

Sine or Cosine?

• y=sinx
• y=cosx

Which equation?

• y= sin(1/3x)
• y= (1/3)sinx
• y= 3sinx
• y= sin(3x)

Which equation?

• y= -cos(2x)
• y= cos(2x)
• y= (1/2)cosx
• y= (-1/2)cosx

What is the period of y=4cos5x?

• 2π/5
• π
• 5
• 5π

Write the equation for a sine function with an amplitude of 6 and a period of π/4.

• y=6sin(8x)
• y=6sin8(x-1)
• y=6sin1/4x
• y=6sinx

Write an equation for the cosine function with amplitude 3, period 2pi, phase shift of pi and a vertical shift of 5.

• y = 5cos(x -pi ) + 3
• y = 3cos(x - pi) + 5
• y = 3cos(2x - pi) + 5
• y = 5cos(2x - pi) + 3