CCSS.Math.Content.HSF.TF.C.8

What are the coordinates of  210° on the unit circle?

• (−√3/2, −1/2)
• (√3/2, −1/2)
• (−√3/2, 1/2)
• (−1/2,−√3/2 )

Tags

CCSS.Math.Content.HSF.TF.C.8

What the coordinates of 270° on the unit circle?

• 0, 1
• 1, 0
• -1, 0
• 0, -1

Tags

CCSS.Math.Content.HSF.TF.C.8

Simplify

• secθ
• cos²θ
• sin²θ
• sin²θ/cos²θ

Tags

CCSS.Math.Content.HSF.TF.C.8

Simplify

• -1
• sin θ
• csc θ
• 1

Tags

CCSS.Math.Content.HSF.TF.C.8

Is this a pythagorean identity?
tan²x + 1 = secx

• Yes
• No

Tags

CCSS.Math.Content.HSF.TF.C.8

Tangent

• tanθ = adjacent / opposite
• tanθ = opposite / adjacent
• tanθ = hypotenuse / opposite

Tags

CCSS.Math.Content.HSF.TF.C.8

What is csc(x) equivalent to?

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

Tags

CCSS.Math.Content.HSF.TF.C.8

tan(sin^-1(-1/2))

• √3
• √3/3
• -√3
• -√3/3

Tags

CCSS.Math.Content.HSF.TF.C.8

In which quadrant is -570⁰

• I

• II

• III

• IV

Tags

CCSS.Math.Content.HSF.TF.C.8

Solve
cos²θ = ½ 
on θ∈[0, 2π)

• θ = π /4, 7π /4
• θ = π /4, 3π /4
• θ = 3π /4, 5π /4
• θ = π /4, 3π /4, 5π /4, 7π /4

Tags

CCSS.Math.Content.HSF.TF.C.8