7.1-7.7 Review

7.1-7.7 Review

Multiple Choice

Find the indicated side of the triangle. Round to two decimal places.

• 6.09

• 8.05

• 9.28

• 10.67

Multiple Choice

Find the indicated angle. Round to two decimal places.

• 22.25º

• 24.15º

• 65.85º

• 67.75º

Multiple Choice

Draw a picture and evaluate without a calculator:

 $\sin\left(-315\degree\right)$  

•  $\frac{\sqrt{2}}{2}$  

•  $-\frac{\sqrt{2}}{2}$  

•  $-\sqrt{2}$  

•  $\frac{1}{2}$  

Multiple Choice

Draw a picture and evaluate without a calculator:

 $\cot\left(\frac{11π}{6}\right)$  

•  $-\frac{\sqrt{3}}{3}$  

•  $\frac{\sqrt{3}}{3}$  

•  $\sqrt{3}$  

•  $-\sqrt{3}$  

Multiple Choice

Draw a picture and evaluate without a calculator:

 $\cos4π$  

• 0

• -1

• undefined

• 1

Multiple Choice

Find the amplitude:

 $y=-3\sin\left(2x-π\right)-1$  

• 3

• -3

• 2π

• π

Multiple Choice

Find the period:

 $y=-3\sin\left(2x-π\right)-1$  

• 3

• π/2

• 2π

• π

Multiple Choice

Find the phase shift:

 $y=-3\sin\left(2x-π\right)-1$  

• 3

• π/2

• 2π

• π

Multiple Choice

Find the vertical shift:

 $y=-3\sin\left(2x-π\right)-1$  

• up 1

• down 1

• right 1

• down 3

Multiple Choice

Graph:

 $y=4\sin x$  

 $y=4\sin x$