AP Precalc Review 3.8-3.12

What is csc(x) equivalent to?

• 1/sin(x)
• 1/tan(x)
• sin(x)
• 1/cos(x)

Tags

CCSS.HSF.TF.A.4

1 - sin²x =

• cos²x

• cos²x+1

• csc²x

• tan²x

Tags

CCSS.HSF.TF.A.4

Tags

CCSS.HSF.TF.A.2

Which of the following is NOT a Pythagorean identity?

• sin²x + cos²x = 1

• 1 - cos²x = sin²x

• 1 - sin²x = cos² x

• sin²x - cos²x = -1

Tags

CCSS.HSF.TF.C.8

Simplify

• -1
• sin θ
• csc θ
• 1

• csc²θ
• sec²θ
• cscθ
• 1

Simplify!

• 1

• cot x

• -1

• undefined units left

Answer explanation

Either know it or you don't.

Inside = opposite, + means left!

Tags

CCSS.HSF-IF.C.7E

7.  What is the phase shift for y = 4cos(¹/₂x +π) - 2?

• left pi/2
• right pi/2
• right 2pi
• left 2pi

Answer explanation

y = 4cos(¹/₂x +π) - 2

Factor out 1/2

y = 4cos¹/₂ (x +2π) - 2

Tags

CCSS.HSF-IF.C.7E