Precalculus (Set-1) Trigonometry-- TEST-4-30-2020

What is the period of y=4cos5x

• 2π/5
• π
• 5
• 5π

Tags

CCSS.HSF.TF.A.4

The period of a function is

• the length of one cycle

• how high and low the function goes from the center line

• the range of the function

Tags

CCSS.HSF.TF.A.4

What is the equation of graph? 

• y = sin 5x
• y =  cos 5x
• y = 5 sin x
• y = 5 cos x 

Tags

CCSS.HSF-IF.C.7E

Which equation?

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

Tags

CCSS.HSF-IF.C.7E

Select 2 possible values for $\theta$  given  $\cos\theta=\frac{\sqrt{3}}{2}.$  

•  $\frac{\pi}{6}$  

•  $\frac{5\pi}{6}$  

•  $\frac{7\pi}{6}$  

•  $\frac{11\pi}{6}$  

Tags

CCSS.HSF.TF.B.7

• A

• B

• C

• D

• A

• B

• C

• D

cosθ is positive in

• the 1st and 2nd quadrants
• the 1st and 3rd quadrants
• the 1st and 4th quadrants
• the 2nd and 3rd quadrants

Tags

CCSS.HSF.TF.A.3

CCSS.HSF.TF.A.4

CCSS.HSF.TF.C.8

What is the cos(7π/6)

• _√3/2

• -√3/2

• -1/2

• 1/2

Tags

CCSS.HSF.TF.A.2

cos 150^o

• -1/2

• 1/2

• √3/2

• -√3/2

Tags

CCSS.HSF.TF.A.2