Precalculus Trig Unit 1 Review

What is the amplitude of y=3sin(7x)-2?

• 7

• -2

• 3

• 6

Tags

CCSS.HSF-IF.C.7E

tan 7π/4

• -1
• 1
• √2/2
• undefined

Tags

CCSS.HSF.TF.A.2

What is the period of

y=5cos3(x-π)+4?

• π/3

• π/5

• 2π/3

• 2π/5

Tags

CCSS.HSF-IF.C.7E

sec 3π/2

• 0
• undefined
• 1
• -1

Tags

CCSS.HSF.TF.A.2

Find tan θ if sin θ = -2/5 and cos θ > 0.

• √21 / 2

• (-2√21) / 21

• -√21 / 2

• (2√21) / 21

Tags

CCSS.HSF.TF.C.8

What is the midline for

y=3-2cos1/3(x + π/6)?

• y = 3

• y = -2

• y = 2

• y = -3

Tags

CCSS.HSF-IF.C.7E

Tell if the value of the expression is positive or negative if θ is in Quadrant II.

• POSITIVE

• NEGATIVE

Tags

CCSS.HSF.TF.A.4

cos 5π/3

• -√3/2

• √3/2

• 1/2

• -1/2

Tags

CCSS.HSF.TF.A.2

Which is an equation of the cosine function with an amplitude of 4, NO reflection over the x-axis, period of π, phase shift of 3?

• y= -4cos 1/2(x - π/4)

• y= 4cos2(x + 3)

• y= 4cos2x + 3

• y= -4cos2(x-π/2)

Tags

CCSS.HSF-IF.C.7E

What is the amplitude of the graph?

• 1

• 3

• 6

• 9

Tags

CCSS.HSF-IF.C.7E