Trigonometry Unit 7 Review

What function is graphed here?

• sine

• cosine

• tangent

• not listed here

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

Which value represents a vertical shift in the following function y=a*sin(bx - c)+d?

• a
• b
• c
• d

The period of a sine or cosine graph can be found by ....

• It's always 2π
• 2π/B
• B(2π)
• 2π+B

Phase shift indicates ...

• An up or down movement

• A left or right movement

• A reflection over the y-axis

• A change in period

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

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

What is the maximum value of the wave y = 10sin(2x - 20) + 25?

• 10
• 20
• 35
• 30

A trig function has an amplitude of 4 and a minimum value of 5.  What is its maximum value?

• 7
• 9
• 11
• 13

Examine the equation  $y=-\cos\left(x-\frac{\pi}{4}\right)+2$  and the graph above. Does the graph represent the equation?

• Yes

• No

• Maybe

• What Graph?

Sine or Cosine?

• y=sinx
• y=cosx