Trigonometric Ratios and the Unit Circle

What is the radius of a unit circle?

• 1

• 2

• 1/2

• 0

1/Tan x =

• cos x

• csc x

• sec x

• cot x

Give the Ratio for SIN X

• opp/adj

• Adj/hyp

• Opp/hyp
  

• adj/opp

Give the Ratio for COS X

• Adj/Hyp

• Opp/Adj

• Adj/Opp

• Opp/Hyp

What is the radius of the unit circle?

• 0

• 1

• 1/2

• √2/2

• 1
• 2
• 3
• 4

What type of circle plays a large role in understanding trig functions?

• An elliptic circle

• The unit circle

• The perfect circle

• The Pythagorean circle

What is the order of the coordinate pairs for the points on the Unit Circle?

What is the length of the hypotenuse of the triangle? (Think about it as a radius)

OP=___

Label OP on your paper.

• undefined

Answer explanation